Restore UI functionalities and clean up dependencies

backendia/node_modules/.bin/node-gyp

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../node-gyp/bin/node-gyp.js" "$@"
+else 
+  exec node  "$basedir/../node-gyp/bin/node-gyp.js" "$@"
+fi

backendia/node_modules/.bin/node-gyp.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\node-gyp\bin\node-gyp.js" %*

backendia/node_modules/.bin/node-gyp.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../node-gyp/bin/node-gyp.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../node-gyp/bin/node-gyp.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../node-gyp/bin/node-gyp.js" $args
+  } else {
+    & "node$exe"  "$basedir/../node-gyp/bin/node-gyp.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

backendia/node_modules/.bin/node-which

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../which/bin/which.js" "$@"
+else 
+  exec node  "$basedir/../which/bin/which.js" "$@"
+fi

backendia/node_modules/.bin/node-which.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\which\bin\which.js" %*

backendia/node_modules/.bin/node-which.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../which/bin/which.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../which/bin/which.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../which/bin/which.js" $args
+  } else {
+    & "node$exe"  "$basedir/../which/bin/which.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

backendia/node_modules/.bin/nopt

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../nopt/bin/nopt.js" "$@"
+else 
+  exec node  "$basedir/../nopt/bin/nopt.js" "$@"
+fi

backendia/node_modules/.bin/nopt.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\nopt\bin\nopt.js" %*

backendia/node_modules/.bin/nopt.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../nopt/bin/nopt.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../nopt/bin/nopt.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../nopt/bin/nopt.js" $args
+  } else {
+    & "node$exe"  "$basedir/../nopt/bin/nopt.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

backendia/node_modules/.bin/prebuild-install

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../prebuild-install/bin.js" "$@"
+else 
+  exec node  "$basedir/../prebuild-install/bin.js" "$@"
+fi

backendia/node_modules/.bin/prebuild-install.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\prebuild-install\bin.js" %*

backendia/node_modules/.bin/prebuild-install.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../prebuild-install/bin.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../prebuild-install/bin.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../prebuild-install/bin.js" $args
+  } else {
+    & "node$exe"  "$basedir/../prebuild-install/bin.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

backendia/node_modules/.bin/rc

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../rc/cli.js" "$@"
+else 
+  exec node  "$basedir/../rc/cli.js" "$@"
+fi

backendia/node_modules/.bin/rc.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\rc\cli.js" %*

backendia/node_modules/.bin/rc.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../rc/cli.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../rc/cli.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../rc/cli.js" $args
+  } else {
+    & "node$exe"  "$basedir/../rc/cli.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

backendia/node_modules/.bin/semver

@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../semver/bin/semver.js" "$@"
+else 
+  exec node  "$basedir/../semver/bin/semver.js" "$@"
+fi

backendia/node_modules/.bin/semver.cmd

@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\semver\bin\semver.js" %*

backendia/node_modules/.bin/semver.ps1

@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../semver/bin/semver.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../semver/bin/semver.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../semver/bin/semver.js" $args
+  } else {
+    & "node$exe"  "$basedir/../semver/bin/semver.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret

backendia/node_modules/@isaacs/fs-minipass/LICENSE

@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

backendia/node_modules/@isaacs/fs-minipass/README.md

@@ -0,0 +1,71 @@
+# fs-minipass
+
+Filesystem streams based on [minipass](http://npm.im/minipass).
+
+4 classes are exported:
+
+- ReadStream
+- ReadStreamSync
+- WriteStream
+- WriteStreamSync
+
+When using `ReadStreamSync`, all of the data is made available
+immediately upon consuming the stream.  Nothing is buffered in memory
+when the stream is constructed.  If the stream is piped to a writer,
+then it will synchronously `read()` and emit data into the writer as
+fast as the writer can consume it.  (That is, it will respect
+backpressure.)  If you call `stream.read()` then it will read the
+entire file and return the contents.
+
+When using `WriteStreamSync`, every write is flushed to the file
+synchronously.  If your writes all come in a single tick, then it'll
+write it all out in a single tick.  It's as synchronous as you are.
+
+The async versions work much like their node builtin counterparts,
+with the exception of introducing significantly less Stream machinery
+overhead.
+
+## USAGE
+
+It's just streams, you pipe them or read() them or write() to them.
+
+```js
+import { ReadStream, WriteStream } from 'fs-minipass'
+// or: const { ReadStream, WriteStream } = require('fs-minipass')
+const readStream = new ReadStream('file.txt')
+const writeStream = new WriteStream('output.txt')
+writeStream.write('some file header or whatever\n')
+readStream.pipe(writeStream)
+```
+
+## ReadStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `readSize` The size of reads to do, defaults to 16MB
+- `size` The size of the file, if known.  Prevents zero-byte read()
+  call at the end.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+  closed when the file is done being read.
+
+## WriteStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `mode` The mode to create the file with. Defaults to `0o666`.
+- `start` The position in the file to start reading.  If not
+  specified, then the file will start writing at position zero, and be
+  truncated by default.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+  closed when the stream is ended.
+- `flags` Flags to use when opening the file.  Irrelevant if `fd` is
+  passed in, since file won't be opened in that case.  Defaults to
+  `'a'` if a `pos` is specified, or `'w'` otherwise.

backendia/node_modules/@isaacs/fs-minipass/dist/commonjs/index.d.ts

@@ -0,0 +1,118 @@
+/// <reference types="node" />
+/// <reference types="node" />
+/// <reference types="node" />
+import EE from 'events';
+import { Minipass } from 'minipass';
+declare const _autoClose: unique symbol;
+declare const _close: unique symbol;
+declare const _ended: unique symbol;
+declare const _fd: unique symbol;
+declare const _finished: unique symbol;
+declare const _flags: unique symbol;
+declare const _flush: unique symbol;
+declare const _handleChunk: unique symbol;
+declare const _makeBuf: unique symbol;
+declare const _mode: unique symbol;
+declare const _needDrain: unique symbol;
+declare const _onerror: unique symbol;
+declare const _onopen: unique symbol;
+declare const _onread: unique symbol;
+declare const _onwrite: unique symbol;
+declare const _open: unique symbol;
+declare const _path: unique symbol;
+declare const _pos: unique symbol;
+declare const _queue: unique symbol;
+declare const _read: unique symbol;
+declare const _readSize: unique symbol;
+declare const _reading: unique symbol;
+declare const _remain: unique symbol;
+declare const _size: unique symbol;
+declare const _write: unique symbol;
+declare const _writing: unique symbol;
+declare const _defaultFlag: unique symbol;
+declare const _errored: unique symbol;
+export type ReadStreamOptions = Minipass.Options<Minipass.ContiguousData> & {
+    fd?: number;
+    readSize?: number;
+    size?: number;
+    autoClose?: boolean;
+};
+export type ReadStreamEvents = Minipass.Events<Minipass.ContiguousData> & {
+    open: [fd: number];
+};
+export declare class ReadStream extends Minipass<Minipass.ContiguousData, Buffer, ReadStreamEvents> {
+    [_errored]: boolean;
+    [_fd]?: number;
+    [_path]: string;
+    [_readSize]: number;
+    [_reading]: boolean;
+    [_size]: number;
+    [_remain]: number;
+    [_autoClose]: boolean;
+    constructor(path: string, opt: ReadStreamOptions);
+    get fd(): number | undefined;
+    get path(): string;
+    write(): void;
+    end(): void;
+    [_open](): void;
+    [_onopen](er?: NodeJS.ErrnoException | null, fd?: number): void;
+    [_makeBuf](): Buffer;
+    [_read](): void;
+    [_onread](er?: NodeJS.ErrnoException | null, br?: number, buf?: Buffer): void;
+    [_close](): void;
+    [_onerror](er: NodeJS.ErrnoException): void;
+    [_handleChunk](br: number, buf: Buffer): boolean;
+    emit<Event extends keyof ReadStreamEvents>(ev: Event, ...args: ReadStreamEvents[Event]): boolean;
+}
+export declare class ReadStreamSync extends ReadStream {
+    [_open](): void;
+    [_read](): void;
+    [_close](): void;
+}
+export type WriteStreamOptions = {
+    fd?: number;
+    autoClose?: boolean;
+    mode?: number;
+    captureRejections?: boolean;
+    start?: number;
+    flags?: string;
+};
+export declare class WriteStream extends EE {
+    readable: false;
+    writable: boolean;
+    [_errored]: boolean;
+    [_writing]: boolean;
+    [_ended]: boolean;
+    [_queue]: Buffer[];
+    [_needDrain]: boolean;
+    [_path]: string;
+    [_mode]: number;
+    [_autoClose]: boolean;
+    [_fd]?: number;
+    [_defaultFlag]: boolean;
+    [_flags]: string;
+    [_finished]: boolean;
+    [_pos]?: number;
+    constructor(path: string, opt: WriteStreamOptions);
+    emit(ev: string, ...args: any[]): boolean;
+    get fd(): number | undefined;
+    get path(): string;
+    [_onerror](er: NodeJS.ErrnoException): void;
+    [_open](): void;
+    [_onopen](er?: null | NodeJS.ErrnoException, fd?: number): void;
+    end(buf: string, enc?: BufferEncoding): this;
+    end(buf?: Buffer, enc?: undefined): this;
+    write(buf: string, enc?: BufferEncoding): boolean;
+    write(buf: Buffer, enc?: undefined): boolean;
+    [_write](buf: Buffer): void;
+    [_onwrite](er?: null | NodeJS.ErrnoException, bw?: number): void;
+    [_flush](): void;
+    [_close](): void;
+}
+export declare class WriteStreamSync extends WriteStream {
+    [_open](): void;
+    [_close](): void;
+    [_write](buf: Buffer): void;
+}
+export {};
+//# sourceMappingURL=index.d.ts.map

backendia/node_modules/@isaacs/fs-minipass/dist/commonjs/index.d.ts.map

@@ -0,0 +1 @@
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backendia/node_modules/@isaacs/fs-minipass/dist/commonjs/index.js

@@ -0,0 +1,430 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WriteStreamSync = exports.WriteStream = exports.ReadStreamSync = exports.ReadStream = void 0;
+const events_1 = __importDefault(require("events"));
+const fs_1 = __importDefault(require("fs"));
+const minipass_1 = require("minipass");
+const writev = fs_1.default.writev;
+const _autoClose = Symbol('_autoClose');
+const _close = Symbol('_close');
+const _ended = Symbol('_ended');
+const _fd = Symbol('_fd');
+const _finished = Symbol('_finished');
+const _flags = Symbol('_flags');
+const _flush = Symbol('_flush');
+const _handleChunk = Symbol('_handleChunk');
+const _makeBuf = Symbol('_makeBuf');
+const _mode = Symbol('_mode');
+const _needDrain = Symbol('_needDrain');
+const _onerror = Symbol('_onerror');
+const _onopen = Symbol('_onopen');
+const _onread = Symbol('_onread');
+const _onwrite = Symbol('_onwrite');
+const _open = Symbol('_open');
+const _path = Symbol('_path');
+const _pos = Symbol('_pos');
+const _queue = Symbol('_queue');
+const _read = Symbol('_read');
+const _readSize = Symbol('_readSize');
+const _reading = Symbol('_reading');
+const _remain = Symbol('_remain');
+const _size = Symbol('_size');
+const _write = Symbol('_write');
+const _writing = Symbol('_writing');
+const _defaultFlag = Symbol('_defaultFlag');
+const _errored = Symbol('_errored');
+class ReadStream extends minipass_1.Minipass {
+    [_errored] = false;
+    [_fd];
+    [_path];
+    [_readSize];
+    [_reading] = false;
+    [_size];
+    [_remain];
+    [_autoClose];
+    constructor(path, opt) {
+        opt = opt || {};
+        super(opt);
+        this.readable = true;
+        this.writable = false;
+        if (typeof path !== 'string') {
+            throw new TypeError('path must be a string');
+        }
+        this[_errored] = false;
+        this[_fd] = typeof opt.fd === 'number' ? opt.fd : undefined;
+        this[_path] = path;
+        this[_readSize] = opt.readSize || 16 * 1024 * 1024;
+        this[_reading] = false;
+        this[_size] = typeof opt.size === 'number' ? opt.size : Infinity;
+        this[_remain] = this[_size];
+        this[_autoClose] =
+            typeof opt.autoClose === 'boolean' ? opt.autoClose : true;
+        if (typeof this[_fd] === 'number') {
+            this[_read]();
+        }
+        else {
+            this[_open]();
+        }
+    }
+    get fd() {
+        return this[_fd];
+    }
+    get path() {
+        return this[_path];
+    }
+    //@ts-ignore
+    write() {
+        throw new TypeError('this is a readable stream');
+    }
+    //@ts-ignore
+    end() {
+        throw new TypeError('this is a readable stream');
+    }
+    [_open]() {
+        fs_1.default.open(this[_path], 'r', (er, fd) => this[_onopen](er, fd));
+    }
+    [_onopen](er, fd) {
+        if (er) {
+            this[_onerror](er);
+        }
+        else {
+            this[_fd] = fd;
+            this.emit('open', fd);
+            this[_read]();
+        }
+    }
+    [_makeBuf]() {
+        return Buffer.allocUnsafe(Math.min(this[_readSize], this[_remain]));
+    }
+    [_read]() {
+        if (!this[_reading]) {
+            this[_reading] = true;
+            const buf = this[_makeBuf]();
+            /* c8 ignore start */
+            if (buf.length === 0) {
+                return process.nextTick(() => this[_onread](null, 0, buf));
+            }
+            /* c8 ignore stop */
+            fs_1.default.read(this[_fd], buf, 0, buf.length, null, (er, br, b) => this[_onread](er, br, b));
+        }
+    }
+    [_onread](er, br, buf) {
+        this[_reading] = false;
+        if (er) {
+            this[_onerror](er);
+        }
+        else if (this[_handleChunk](br, buf)) {
+            this[_read]();
+        }
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs_1.default.close(fd, er => er ? this.emit('error', er) : this.emit('close'));
+        }
+    }
+    [_onerror](er) {
+        this[_reading] = true;
+        this[_close]();
+        this.emit('error', er);
+    }
+    [_handleChunk](br, buf) {
+        let ret = false;
+        // no effect if infinite
+        this[_remain] -= br;
+        if (br > 0) {
+            ret = super.write(br < buf.length ? buf.subarray(0, br) : buf);
+        }
+        if (br === 0 || this[_remain] <= 0) {
+            ret = false;
+            this[_close]();
+            super.end();
+        }
+        return ret;
+    }
+    emit(ev, ...args) {
+        switch (ev) {
+            case 'prefinish':
+            case 'finish':
+                return false;
+            case 'drain':
+                if (typeof this[_fd] === 'number') {
+                    this[_read]();
+                }
+                return false;
+            case 'error':
+                if (this[_errored]) {
+                    return false;
+                }
+                this[_errored] = true;
+                return super.emit(ev, ...args);
+            default:
+                return super.emit(ev, ...args);
+        }
+    }
+}
+exports.ReadStream = ReadStream;
+class ReadStreamSync extends ReadStream {
+    [_open]() {
+        let threw = true;
+        try {
+            this[_onopen](null, fs_1.default.openSync(this[_path], 'r'));
+            threw = false;
+        }
+        finally {
+            if (threw) {
+                this[_close]();
+            }
+        }
+    }
+    [_read]() {
+        let threw = true;
+        try {
+            if (!this[_reading]) {
+                this[_reading] = true;
+                do {
+                    const buf = this[_makeBuf]();
+                    /* c8 ignore start */
+                    const br = buf.length === 0
+                        ? 0
+                        : fs_1.default.readSync(this[_fd], buf, 0, buf.length, null);
+                    /* c8 ignore stop */
+                    if (!this[_handleChunk](br, buf)) {
+                        break;
+                    }
+                } while (true);
+                this[_reading] = false;
+            }
+            threw = false;
+        }
+        finally {
+            if (threw) {
+                this[_close]();
+            }
+        }
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs_1.default.closeSync(fd);
+            this.emit('close');
+        }
+    }
+}
+exports.ReadStreamSync = ReadStreamSync;
+class WriteStream extends events_1.default {
+    readable = false;
+    writable = true;
+    [_errored] = false;
+    [_writing] = false;
+    [_ended] = false;
+    [_queue] = [];
+    [_needDrain] = false;
+    [_path];
+    [_mode];
+    [_autoClose];
+    [_fd];
+    [_defaultFlag];
+    [_flags];
+    [_finished] = false;
+    [_pos];
+    constructor(path, opt) {
+        opt = opt || {};
+        super(opt);
+        this[_path] = path;
+        this[_fd] = typeof opt.fd === 'number' ? opt.fd : undefined;
+        this[_mode] = opt.mode === undefined ? 0o666 : opt.mode;
+        this[_pos] = typeof opt.start === 'number' ? opt.start : undefined;
+        this[_autoClose] =
+            typeof opt.autoClose === 'boolean' ? opt.autoClose : true;
+        // truncating makes no sense when writing into the middle
+        const defaultFlag = this[_pos] !== undefined ? 'r+' : 'w';
+        this[_defaultFlag] = opt.flags === undefined;
+        this[_flags] = opt.flags === undefined ? defaultFlag : opt.flags;
+        if (this[_fd] === undefined) {
+            this[_open]();
+        }
+    }
+    emit(ev, ...args) {
+        if (ev === 'error') {
+            if (this[_errored]) {
+                return false;
+            }
+            this[_errored] = true;
+        }
+        return super.emit(ev, ...args);
+    }
+    get fd() {
+        return this[_fd];
+    }
+    get path() {
+        return this[_path];
+    }
+    [_onerror](er) {
+        this[_close]();
+        this[_writing] = true;
+        this.emit('error', er);
+    }
+    [_open]() {
+        fs_1.default.open(this[_path], this[_flags], this[_mode], (er, fd) => this[_onopen](er, fd));
+    }
+    [_onopen](er, fd) {
+        if (this[_defaultFlag] &&
+            this[_flags] === 'r+' &&
+            er &&
+            er.code === 'ENOENT') {
+            this[_flags] = 'w';
+            this[_open]();
+        }
+        else if (er) {
+            this[_onerror](er);
+        }
+        else {
+            this[_fd] = fd;
+            this.emit('open', fd);
+            if (!this[_writing]) {
+                this[_flush]();
+            }
+        }
+    }
+    end(buf, enc) {
+        if (buf) {
+            //@ts-ignore
+            this.write(buf, enc);
+        }
+        this[_ended] = true;
+        // synthetic after-write logic, where drain/finish live
+        if (!this[_writing] &&
+            !this[_queue].length &&
+            typeof this[_fd] === 'number') {
+            this[_onwrite](null, 0);
+        }
+        return this;
+    }
+    write(buf, enc) {
+        if (typeof buf === 'string') {
+            buf = Buffer.from(buf, enc);
+        }
+        if (this[_ended]) {
+            this.emit('error', new Error('write() after end()'));
+            return false;
+        }
+        if (this[_fd] === undefined || this[_writing] || this[_queue].length) {
+            this[_queue].push(buf);
+            this[_needDrain] = true;
+            return false;
+        }
+        this[_writing] = true;
+        this[_write](buf);
+        return true;
+    }
+    [_write](buf) {
+        fs_1.default.write(this[_fd], buf, 0, buf.length, this[_pos], (er, bw) => this[_onwrite](er, bw));
+    }
+    [_onwrite](er, bw) {
+        if (er) {
+            this[_onerror](er);
+        }
+        else {
+            if (this[_pos] !== undefined && typeof bw === 'number') {
+                this[_pos] += bw;
+            }
+            if (this[_queue].length) {
+                this[_flush]();
+            }
+            else {
+                this[_writing] = false;
+                if (this[_ended] && !this[_finished]) {
+                    this[_finished] = true;
+                    this[_close]();
+                    this.emit('finish');
+                }
+                else if (this[_needDrain]) {
+                    this[_needDrain] = false;
+                    this.emit('drain');
+                }
+            }
+        }
+    }
+    [_flush]() {
+        if (this[_queue].length === 0) {
+            if (this[_ended]) {
+                this[_onwrite](null, 0);
+            }
+        }
+        else if (this[_queue].length === 1) {
+            this[_write](this[_queue].pop());
+        }
+        else {
+            const iovec = this[_queue];
+            this[_queue] = [];
+            writev(this[_fd], iovec, this[_pos], (er, bw) => this[_onwrite](er, bw));
+        }
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs_1.default.close(fd, er => er ? this.emit('error', er) : this.emit('close'));
+        }
+    }
+}
+exports.WriteStream = WriteStream;
+class WriteStreamSync extends WriteStream {
+    [_open]() {
+        let fd;
+        // only wrap in a try{} block if we know we'll retry, to avoid
+        // the rethrow obscuring the error's source frame in most cases.
+        if (this[_defaultFlag] && this[_flags] === 'r+') {
+            try {
+                fd = fs_1.default.openSync(this[_path], this[_flags], this[_mode]);
+            }
+            catch (er) {
+                if (er?.code === 'ENOENT') {
+                    this[_flags] = 'w';
+                    return this[_open]();
+                }
+                else {
+                    throw er;
+                }
+            }
+        }
+        else {
+            fd = fs_1.default.openSync(this[_path], this[_flags], this[_mode]);
+        }
+        this[_onopen](null, fd);
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs_1.default.closeSync(fd);
+            this.emit('close');
+        }
+    }
+    [_write](buf) {
+        // throw the original, but try to close if it fails
+        let threw = true;
+        try {
+            this[_onwrite](null, fs_1.default.writeSync(this[_fd], buf, 0, buf.length, this[_pos]));
+            threw = false;
+        }
+        finally {
+            if (threw) {
+                try {
+                    this[_close]();
+                }
+                catch {
+                    // ok error
+                }
+            }
+        }
+    }
+}
+exports.WriteStreamSync = WriteStreamSync;
+//# sourceMappingURL=index.js.map

backendia/node_modules/@isaacs/fs-minipass/dist/commonjs/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}

backendia/node_modules/@isaacs/fs-minipass/dist/esm/index.d.ts

@@ -0,0 +1,118 @@
+/// <reference types="node" resolution-mode="require"/>
+/// <reference types="node" resolution-mode="require"/>
+/// <reference types="node" resolution-mode="require"/>
+import EE from 'events';
+import { Minipass } from 'minipass';
+declare const _autoClose: unique symbol;
+declare const _close: unique symbol;
+declare const _ended: unique symbol;
+declare const _fd: unique symbol;
+declare const _finished: unique symbol;
+declare const _flags: unique symbol;
+declare const _flush: unique symbol;
+declare const _handleChunk: unique symbol;
+declare const _makeBuf: unique symbol;
+declare const _mode: unique symbol;
+declare const _needDrain: unique symbol;
+declare const _onerror: unique symbol;
+declare const _onopen: unique symbol;
+declare const _onread: unique symbol;
+declare const _onwrite: unique symbol;
+declare const _open: unique symbol;
+declare const _path: unique symbol;
+declare const _pos: unique symbol;
+declare const _queue: unique symbol;
+declare const _read: unique symbol;
+declare const _readSize: unique symbol;
+declare const _reading: unique symbol;
+declare const _remain: unique symbol;
+declare const _size: unique symbol;
+declare const _write: unique symbol;
+declare const _writing: unique symbol;
+declare const _defaultFlag: unique symbol;
+declare const _errored: unique symbol;
+export type ReadStreamOptions = Minipass.Options<Minipass.ContiguousData> & {
+    fd?: number;
+    readSize?: number;
+    size?: number;
+    autoClose?: boolean;
+};
+export type ReadStreamEvents = Minipass.Events<Minipass.ContiguousData> & {
+    open: [fd: number];
+};
+export declare class ReadStream extends Minipass<Minipass.ContiguousData, Buffer, ReadStreamEvents> {
+    [_errored]: boolean;
+    [_fd]?: number;
+    [_path]: string;
+    [_readSize]: number;
+    [_reading]: boolean;
+    [_size]: number;
+    [_remain]: number;
+    [_autoClose]: boolean;
+    constructor(path: string, opt: ReadStreamOptions);
+    get fd(): number | undefined;
+    get path(): string;
+    write(): void;
+    end(): void;
+    [_open](): void;
+    [_onopen](er?: NodeJS.ErrnoException | null, fd?: number): void;
+    [_makeBuf](): Buffer;
+    [_read](): void;
+    [_onread](er?: NodeJS.ErrnoException | null, br?: number, buf?: Buffer): void;
+    [_close](): void;
+    [_onerror](er: NodeJS.ErrnoException): void;
+    [_handleChunk](br: number, buf: Buffer): boolean;
+    emit<Event extends keyof ReadStreamEvents>(ev: Event, ...args: ReadStreamEvents[Event]): boolean;
+}
+export declare class ReadStreamSync extends ReadStream {
+    [_open](): void;
+    [_read](): void;
+    [_close](): void;
+}
+export type WriteStreamOptions = {
+    fd?: number;
+    autoClose?: boolean;
+    mode?: number;
+    captureRejections?: boolean;
+    start?: number;
+    flags?: string;
+};
+export declare class WriteStream extends EE {
+    readable: false;
+    writable: boolean;
+    [_errored]: boolean;
+    [_writing]: boolean;
+    [_ended]: boolean;
+    [_queue]: Buffer[];
+    [_needDrain]: boolean;
+    [_path]: string;
+    [_mode]: number;
+    [_autoClose]: boolean;
+    [_fd]?: number;
+    [_defaultFlag]: boolean;
+    [_flags]: string;
+    [_finished]: boolean;
+    [_pos]?: number;
+    constructor(path: string, opt: WriteStreamOptions);
+    emit(ev: string, ...args: any[]): boolean;
+    get fd(): number | undefined;
+    get path(): string;
+    [_onerror](er: NodeJS.ErrnoException): void;
+    [_open](): void;
+    [_onopen](er?: null | NodeJS.ErrnoException, fd?: number): void;
+    end(buf: string, enc?: BufferEncoding): this;
+    end(buf?: Buffer, enc?: undefined): this;
+    write(buf: string, enc?: BufferEncoding): boolean;
+    write(buf: Buffer, enc?: undefined): boolean;
+    [_write](buf: Buffer): void;
+    [_onwrite](er?: null | NodeJS.ErrnoException, bw?: number): void;
+    [_flush](): void;
+    [_close](): void;
+}
+export declare class WriteStreamSync extends WriteStream {
+    [_open](): void;
+    [_close](): void;
+    [_write](buf: Buffer): void;
+}
+export {};
+//# sourceMappingURL=index.d.ts.map

backendia/node_modules/@isaacs/fs-minipass/dist/esm/index.d.ts.map

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backendia/node_modules/@isaacs/fs-minipass/dist/esm/index.js

@@ -0,0 +1,420 @@
+import EE from 'events';
+import fs from 'fs';
+import { Minipass } from 'minipass';
+const writev = fs.writev;
+const _autoClose = Symbol('_autoClose');
+const _close = Symbol('_close');
+const _ended = Symbol('_ended');
+const _fd = Symbol('_fd');
+const _finished = Symbol('_finished');
+const _flags = Symbol('_flags');
+const _flush = Symbol('_flush');
+const _handleChunk = Symbol('_handleChunk');
+const _makeBuf = Symbol('_makeBuf');
+const _mode = Symbol('_mode');
+const _needDrain = Symbol('_needDrain');
+const _onerror = Symbol('_onerror');
+const _onopen = Symbol('_onopen');
+const _onread = Symbol('_onread');
+const _onwrite = Symbol('_onwrite');
+const _open = Symbol('_open');
+const _path = Symbol('_path');
+const _pos = Symbol('_pos');
+const _queue = Symbol('_queue');
+const _read = Symbol('_read');
+const _readSize = Symbol('_readSize');
+const _reading = Symbol('_reading');
+const _remain = Symbol('_remain');
+const _size = Symbol('_size');
+const _write = Symbol('_write');
+const _writing = Symbol('_writing');
+const _defaultFlag = Symbol('_defaultFlag');
+const _errored = Symbol('_errored');
+export class ReadStream extends Minipass {
+    [_errored] = false;
+    [_fd];
+    [_path];
+    [_readSize];
+    [_reading] = false;
+    [_size];
+    [_remain];
+    [_autoClose];
+    constructor(path, opt) {
+        opt = opt || {};
+        super(opt);
+        this.readable = true;
+        this.writable = false;
+        if (typeof path !== 'string') {
+            throw new TypeError('path must be a string');
+        }
+        this[_errored] = false;
+        this[_fd] = typeof opt.fd === 'number' ? opt.fd : undefined;
+        this[_path] = path;
+        this[_readSize] = opt.readSize || 16 * 1024 * 1024;
+        this[_reading] = false;
+        this[_size] = typeof opt.size === 'number' ? opt.size : Infinity;
+        this[_remain] = this[_size];
+        this[_autoClose] =
+            typeof opt.autoClose === 'boolean' ? opt.autoClose : true;
+        if (typeof this[_fd] === 'number') {
+            this[_read]();
+        }
+        else {
+            this[_open]();
+        }
+    }
+    get fd() {
+        return this[_fd];
+    }
+    get path() {
+        return this[_path];
+    }
+    //@ts-ignore
+    write() {
+        throw new TypeError('this is a readable stream');
+    }
+    //@ts-ignore
+    end() {
+        throw new TypeError('this is a readable stream');
+    }
+    [_open]() {
+        fs.open(this[_path], 'r', (er, fd) => this[_onopen](er, fd));
+    }
+    [_onopen](er, fd) {
+        if (er) {
+            this[_onerror](er);
+        }
+        else {
+            this[_fd] = fd;
+            this.emit('open', fd);
+            this[_read]();
+        }
+    }
+    [_makeBuf]() {
+        return Buffer.allocUnsafe(Math.min(this[_readSize], this[_remain]));
+    }
+    [_read]() {
+        if (!this[_reading]) {
+            this[_reading] = true;
+            const buf = this[_makeBuf]();
+            /* c8 ignore start */
+            if (buf.length === 0) {
+                return process.nextTick(() => this[_onread](null, 0, buf));
+            }
+            /* c8 ignore stop */
+            fs.read(this[_fd], buf, 0, buf.length, null, (er, br, b) => this[_onread](er, br, b));
+        }
+    }
+    [_onread](er, br, buf) {
+        this[_reading] = false;
+        if (er) {
+            this[_onerror](er);
+        }
+        else if (this[_handleChunk](br, buf)) {
+            this[_read]();
+        }
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs.close(fd, er => er ? this.emit('error', er) : this.emit('close'));
+        }
+    }
+    [_onerror](er) {
+        this[_reading] = true;
+        this[_close]();
+        this.emit('error', er);
+    }
+    [_handleChunk](br, buf) {
+        let ret = false;
+        // no effect if infinite
+        this[_remain] -= br;
+        if (br > 0) {
+            ret = super.write(br < buf.length ? buf.subarray(0, br) : buf);
+        }
+        if (br === 0 || this[_remain] <= 0) {
+            ret = false;
+            this[_close]();
+            super.end();
+        }
+        return ret;
+    }
+    emit(ev, ...args) {
+        switch (ev) {
+            case 'prefinish':
+            case 'finish':
+                return false;
+            case 'drain':
+                if (typeof this[_fd] === 'number') {
+                    this[_read]();
+                }
+                return false;
+            case 'error':
+                if (this[_errored]) {
+                    return false;
+                }
+                this[_errored] = true;
+                return super.emit(ev, ...args);
+            default:
+                return super.emit(ev, ...args);
+        }
+    }
+}
+export class ReadStreamSync extends ReadStream {
+    [_open]() {
+        let threw = true;
+        try {
+            this[_onopen](null, fs.openSync(this[_path], 'r'));
+            threw = false;
+        }
+        finally {
+            if (threw) {
+                this[_close]();
+            }
+        }
+    }
+    [_read]() {
+        let threw = true;
+        try {
+            if (!this[_reading]) {
+                this[_reading] = true;
+                do {
+                    const buf = this[_makeBuf]();
+                    /* c8 ignore start */
+                    const br = buf.length === 0
+                        ? 0
+                        : fs.readSync(this[_fd], buf, 0, buf.length, null);
+                    /* c8 ignore stop */
+                    if (!this[_handleChunk](br, buf)) {
+                        break;
+                    }
+                } while (true);
+                this[_reading] = false;
+            }
+            threw = false;
+        }
+        finally {
+            if (threw) {
+                this[_close]();
+            }
+        }
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs.closeSync(fd);
+            this.emit('close');
+        }
+    }
+}
+export class WriteStream extends EE {
+    readable = false;
+    writable = true;
+    [_errored] = false;
+    [_writing] = false;
+    [_ended] = false;
+    [_queue] = [];
+    [_needDrain] = false;
+    [_path];
+    [_mode];
+    [_autoClose];
+    [_fd];
+    [_defaultFlag];
+    [_flags];
+    [_finished] = false;
+    [_pos];
+    constructor(path, opt) {
+        opt = opt || {};
+        super(opt);
+        this[_path] = path;
+        this[_fd] = typeof opt.fd === 'number' ? opt.fd : undefined;
+        this[_mode] = opt.mode === undefined ? 0o666 : opt.mode;
+        this[_pos] = typeof opt.start === 'number' ? opt.start : undefined;
+        this[_autoClose] =
+            typeof opt.autoClose === 'boolean' ? opt.autoClose : true;
+        // truncating makes no sense when writing into the middle
+        const defaultFlag = this[_pos] !== undefined ? 'r+' : 'w';
+        this[_defaultFlag] = opt.flags === undefined;
+        this[_flags] = opt.flags === undefined ? defaultFlag : opt.flags;
+        if (this[_fd] === undefined) {
+            this[_open]();
+        }
+    }
+    emit(ev, ...args) {
+        if (ev === 'error') {
+            if (this[_errored]) {
+                return false;
+            }
+            this[_errored] = true;
+        }
+        return super.emit(ev, ...args);
+    }
+    get fd() {
+        return this[_fd];
+    }
+    get path() {
+        return this[_path];
+    }
+    [_onerror](er) {
+        this[_close]();
+        this[_writing] = true;
+        this.emit('error', er);
+    }
+    [_open]() {
+        fs.open(this[_path], this[_flags], this[_mode], (er, fd) => this[_onopen](er, fd));
+    }
+    [_onopen](er, fd) {
+        if (this[_defaultFlag] &&
+            this[_flags] === 'r+' &&
+            er &&
+            er.code === 'ENOENT') {
+            this[_flags] = 'w';
+            this[_open]();
+        }
+        else if (er) {
+            this[_onerror](er);
+        }
+        else {
+            this[_fd] = fd;
+            this.emit('open', fd);
+            if (!this[_writing]) {
+                this[_flush]();
+            }
+        }
+    }
+    end(buf, enc) {
+        if (buf) {
+            //@ts-ignore
+            this.write(buf, enc);
+        }
+        this[_ended] = true;
+        // synthetic after-write logic, where drain/finish live
+        if (!this[_writing] &&
+            !this[_queue].length &&
+            typeof this[_fd] === 'number') {
+            this[_onwrite](null, 0);
+        }
+        return this;
+    }
+    write(buf, enc) {
+        if (typeof buf === 'string') {
+            buf = Buffer.from(buf, enc);
+        }
+        if (this[_ended]) {
+            this.emit('error', new Error('write() after end()'));
+            return false;
+        }
+        if (this[_fd] === undefined || this[_writing] || this[_queue].length) {
+            this[_queue].push(buf);
+            this[_needDrain] = true;
+            return false;
+        }
+        this[_writing] = true;
+        this[_write](buf);
+        return true;
+    }
+    [_write](buf) {
+        fs.write(this[_fd], buf, 0, buf.length, this[_pos], (er, bw) => this[_onwrite](er, bw));
+    }
+    [_onwrite](er, bw) {
+        if (er) {
+            this[_onerror](er);
+        }
+        else {
+            if (this[_pos] !== undefined && typeof bw === 'number') {
+                this[_pos] += bw;
+            }
+            if (this[_queue].length) {
+                this[_flush]();
+            }
+            else {
+                this[_writing] = false;
+                if (this[_ended] && !this[_finished]) {
+                    this[_finished] = true;
+                    this[_close]();
+                    this.emit('finish');
+                }
+                else if (this[_needDrain]) {
+                    this[_needDrain] = false;
+                    this.emit('drain');
+                }
+            }
+        }
+    }
+    [_flush]() {
+        if (this[_queue].length === 0) {
+            if (this[_ended]) {
+                this[_onwrite](null, 0);
+            }
+        }
+        else if (this[_queue].length === 1) {
+            this[_write](this[_queue].pop());
+        }
+        else {
+            const iovec = this[_queue];
+            this[_queue] = [];
+            writev(this[_fd], iovec, this[_pos], (er, bw) => this[_onwrite](er, bw));
+        }
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs.close(fd, er => er ? this.emit('error', er) : this.emit('close'));
+        }
+    }
+}
+export class WriteStreamSync extends WriteStream {
+    [_open]() {
+        let fd;
+        // only wrap in a try{} block if we know we'll retry, to avoid
+        // the rethrow obscuring the error's source frame in most cases.
+        if (this[_defaultFlag] && this[_flags] === 'r+') {
+            try {
+                fd = fs.openSync(this[_path], this[_flags], this[_mode]);
+            }
+            catch (er) {
+                if (er?.code === 'ENOENT') {
+                    this[_flags] = 'w';
+                    return this[_open]();
+                }
+                else {
+                    throw er;
+                }
+            }
+        }
+        else {
+            fd = fs.openSync(this[_path], this[_flags], this[_mode]);
+        }
+        this[_onopen](null, fd);
+    }
+    [_close]() {
+        if (this[_autoClose] && typeof this[_fd] === 'number') {
+            const fd = this[_fd];
+            this[_fd] = undefined;
+            fs.closeSync(fd);
+            this.emit('close');
+        }
+    }
+    [_write](buf) {
+        // throw the original, but try to close if it fails
+        let threw = true;
+        try {
+            this[_onwrite](null, fs.writeSync(this[_fd], buf, 0, buf.length, this[_pos]));
+            threw = false;
+        }
+        finally {
+            if (threw) {
+                try {
+                    this[_close]();
+                }
+                catch {
+                    // ok error
+                }
+            }
+        }
+    }
+}
+//# sourceMappingURL=index.js.map

backendia/node_modules/@isaacs/fs-minipass/dist/esm/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

backendia/node_modules/@isaacs/fs-minipass/package.json

@@ -0,0 +1,72 @@
+{
+  "name": "@isaacs/fs-minipass",
+  "version": "4.0.1",
+  "main": "./dist/commonjs/index.js",
+  "scripts": {
+    "prepare": "tshy",
+    "pretest": "npm run prepare",
+    "test": "tap",
+    "preversion": "npm test",
+    "postversion": "npm publish",
+    "prepublishOnly": "git push origin --follow-tags",
+    "format": "prettier --write . --loglevel warn",
+    "typedoc": "typedoc --tsconfig .tshy/esm.json ./src/*.ts"
+  },
+  "keywords": [],
+  "author": "Isaac Z. Schlueter",
+  "license": "ISC",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/npm/fs-minipass.git"
+  },
+  "description": "fs read and write streams based on minipass",
+  "dependencies": {
+    "minipass": "^7.0.4"
+  },
+  "devDependencies": {
+    "@types/node": "^20.11.30",
+    "mutate-fs": "^2.1.1",
+    "prettier": "^3.2.5",
+    "tap": "^18.7.1",
+    "tshy": "^1.12.0",
+    "typedoc": "^0.25.12"
+  },
+  "files": [
+    "dist"
+  ],
+  "engines": {
+    "node": ">=18.0.0"
+  },
+  "tshy": {
+    "exports": {
+      "./package.json": "./package.json",
+      ".": "./src/index.ts"
+    }
+  },
+  "exports": {
+    "./package.json": "./package.json",
+    ".": {
+      "import": {
+        "types": "./dist/esm/index.d.ts",
+        "default": "./dist/esm/index.js"
+      },
+      "require": {
+        "types": "./dist/commonjs/index.d.ts",
+        "default": "./dist/commonjs/index.js"
+      }
+    }
+  },
+  "types": "./dist/commonjs/index.d.ts",
+  "type": "module",
+  "prettier": {
+    "semi": false,
+    "printWidth": 75,
+    "tabWidth": 2,
+    "useTabs": false,
+    "singleQuote": true,
+    "jsxSingleQuote": false,
+    "bracketSameLine": true,
+    "arrowParens": "avoid",
+    "endOfLine": "lf"
+  }
+}

backendia/node_modules/abbrev/LICENSE

@@ -0,0 +1,46 @@
+This software is dual-licensed under the ISC and MIT licenses.
+You may use this software under EITHER of the following licenses.
+
+----------
+
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+----------
+
+Copyright Isaac Z. Schlueter and Contributors
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

backendia/node_modules/abbrev/README.md

@@ -0,0 +1,23 @@
+# abbrev-js
+
+Just like [ruby's Abbrev](http://apidock.com/ruby/Abbrev).
+
+Usage:
+
+    var abbrev = require("abbrev");
+    abbrev("foo", "fool", "folding", "flop");
+    
+    // returns:
+    { fl: 'flop'
+    , flo: 'flop'
+    , flop: 'flop'
+    , fol: 'folding'
+    , fold: 'folding'
+    , foldi: 'folding'
+    , foldin: 'folding'
+    , folding: 'folding'
+    , foo: 'foo'
+    , fool: 'fool'
+    }
+
+This is handy for command-line scripts, or other cases where you want to be able to accept shorthands.

backendia/node_modules/abbrev/lib/index.js

@@ -0,0 +1,53 @@
+module.exports = abbrev
+
+function abbrev (...args) {
+  let list = args
+  if (args.length === 1 && (Array.isArray(args[0]) || typeof args[0] === 'string')) {
+    list = [].concat(args[0])
+  }
+
+  for (let i = 0, l = list.length; i < l; i++) {
+    list[i] = typeof list[i] === 'string' ? list[i] : String(list[i])
+  }
+
+  // sort them lexicographically, so that they're next to their nearest kin
+  list = list.sort(lexSort)
+
+  // walk through each, seeing how much it has in common with the next and previous
+  const abbrevs = {}
+  let prev = ''
+  for (let ii = 0, ll = list.length; ii < ll; ii++) {
+    const current = list[ii]
+    const next = list[ii + 1] || ''
+    let nextMatches = true
+    let prevMatches = true
+    if (current === next) {
+      continue
+    }
+    let j = 0
+    const cl = current.length
+    for (; j < cl; j++) {
+      const curChar = current.charAt(j)
+      nextMatches = nextMatches && curChar === next.charAt(j)
+      prevMatches = prevMatches && curChar === prev.charAt(j)
+      if (!nextMatches && !prevMatches) {
+        j++
+        break
+      }
+    }
+    prev = current
+    if (j === cl) {
+      abbrevs[current] = current
+      continue
+    }
+    for (let a = current.slice(0, j); j <= cl; j++) {
+      abbrevs[a] = current
+      a += current.charAt(j)
+    }
+  }
+  return abbrevs
+}
+
+function lexSort (a, b) {
+  return a === b ? 0 : a > b ? 1 : -1
+}

backendia/node_modules/abbrev/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "abbrev",
+  "version": "4.0.0",
+  "description": "Like ruby's abbrev module, but in js",
+  "author": "GitHub Inc.",
+  "main": "lib/index.js",
+  "scripts": {
+    "test": "node --test",
+    "lint": "npm run eslint",
+    "postlint": "template-oss-check",
+    "template-oss-apply": "template-oss-apply --force",
+    "lintfix": "npm run eslint -- --fix",
+    "snap": "node --test --test-update-snapshots",
+    "posttest": "npm run lint",
+    "eslint": "eslint \"**/*.{js,cjs,ts,mjs,jsx,tsx}\"",
+    "test:cover": "node --test --experimental-test-coverage --test-timeout=3000 --test-coverage-lines=100 --test-coverage-functions=100 --test-coverage-branches=100"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/abbrev-js.git"
+  },
+  "license": "ISC",
+  "devDependencies": {
+    "@npmcli/eslint-config": "^5.0.0",
+    "@npmcli/template-oss": "4.26.1"
+  },
+  "files": [
+    "bin/",
+    "lib/"
+  ],
+  "engines": {
+    "node": "^20.17.0 || >=22.9.0"
+  },
+  "templateOSS": {
+    "//@npmcli/template-oss": "This file is partially managed by @npmcli/template-oss. Edits may be overwritten.",
+    "version": "4.26.1",
+    "publish": true,
+    "testRunner": "node:test",
+    "latestCiVersion": 24
+  }
+}

backendia/node_modules/accepts/HISTORY.md

@@ -0,0 +1,250 @@
+2.0.0 / 2024-08-31
+==================
+
+  * Drop node <18 support
+  * deps: mime-types@^3.0.0
+  * deps: negotiator@^1.0.0
+
+1.3.8 / 2022-02-02
+==================
+
+  * deps: mime-types@~2.1.34
+    - deps: mime-db@~1.51.0
+  * deps: negotiator@0.6.3
+
+1.3.7 / 2019-04-29
+==================
+
+  * deps: negotiator@0.6.2
+    - Fix sorting charset, encoding, and language with extra parameters
+
+1.3.6 / 2019-04-28
+==================
+
+  * deps: mime-types@~2.1.24
+    - deps: mime-db@~1.40.0
+
+1.3.5 / 2018-02-28
+==================
+
+  * deps: mime-types@~2.1.18
+    - deps: mime-db@~1.33.0
+
+1.3.4 / 2017-08-22
+==================
+
+  * deps: mime-types@~2.1.16
+    - deps: mime-db@~1.29.0
+
+1.3.3 / 2016-05-02
+==================
+
+  * deps: mime-types@~2.1.11
+    - deps: mime-db@~1.23.0
+  * deps: negotiator@0.6.1
+    - perf: improve `Accept` parsing speed
+    - perf: improve `Accept-Charset` parsing speed
+    - perf: improve `Accept-Encoding` parsing speed
+    - perf: improve `Accept-Language` parsing speed
+
+1.3.2 / 2016-03-08
+==================
+
+  * deps: mime-types@~2.1.10
+    - Fix extension of `application/dash+xml`
+    - Update primary extension for `audio/mp4`
+    - deps: mime-db@~1.22.0
+
+1.3.1 / 2016-01-19
+==================
+
+  * deps: mime-types@~2.1.9
+    - deps: mime-db@~1.21.0
+
+1.3.0 / 2015-09-29
+==================
+
+  * deps: mime-types@~2.1.7
+    - deps: mime-db@~1.19.0
+  * deps: negotiator@0.6.0
+    - Fix including type extensions in parameters in `Accept` parsing
+    - Fix parsing `Accept` parameters with quoted equals
+    - Fix parsing `Accept` parameters with quoted semicolons
+    - Lazy-load modules from main entry point
+    - perf: delay type concatenation until needed
+    - perf: enable strict mode
+    - perf: hoist regular expressions
+    - perf: remove closures getting spec properties
+    - perf: remove a closure from media type parsing
+    - perf: remove property delete from media type parsing
+
+1.2.13 / 2015-09-06
+===================
+
+  * deps: mime-types@~2.1.6
+    - deps: mime-db@~1.18.0
+
+1.2.12 / 2015-07-30
+===================
+
+  * deps: mime-types@~2.1.4
+    - deps: mime-db@~1.16.0
+
+1.2.11 / 2015-07-16
+===================
+
+  * deps: mime-types@~2.1.3
+    - deps: mime-db@~1.15.0
+
+1.2.10 / 2015-07-01
+===================
+
+  * deps: mime-types@~2.1.2
+    - deps: mime-db@~1.14.0
+
+1.2.9 / 2015-06-08
+==================
+
+  * deps: mime-types@~2.1.1
+    - perf: fix deopt during mapping
+
+1.2.8 / 2015-06-07
+==================
+
+  * deps: mime-types@~2.1.0
+    - deps: mime-db@~1.13.0
+  * perf: avoid argument reassignment & argument slice
+  * perf: avoid negotiator recursive construction
+  * perf: enable strict mode
+  * perf: remove unnecessary bitwise operator
+
+1.2.7 / 2015-05-10
+==================
+
+  * deps: negotiator@0.5.3
+    - Fix media type parameter matching to be case-insensitive
+
+1.2.6 / 2015-05-07
+==================
+
+  * deps: mime-types@~2.0.11
+    - deps: mime-db@~1.9.1
+  * deps: negotiator@0.5.2
+    - Fix comparing media types with quoted values
+    - Fix splitting media types with quoted commas
+
+1.2.5 / 2015-03-13
+==================
+
+  * deps: mime-types@~2.0.10
+    - deps: mime-db@~1.8.0
+
+1.2.4 / 2015-02-14
+==================
+
+  * Support Node.js 0.6
+  * deps: mime-types@~2.0.9
+    - deps: mime-db@~1.7.0
+  * deps: negotiator@0.5.1
+    - Fix preference sorting to be stable for long acceptable lists
+
+1.2.3 / 2015-01-31
+==================
+
+  * deps: mime-types@~2.0.8
+    - deps: mime-db@~1.6.0
+
+1.2.2 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.7
+    - deps: mime-db@~1.5.0
+
+1.2.1 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.5
+    - deps: mime-db@~1.3.1
+
+1.2.0 / 2014-12-19
+==================
+
+  * deps: negotiator@0.5.0
+    - Fix list return order when large accepted list
+    - Fix missing identity encoding when q=0 exists
+    - Remove dynamic building of Negotiator class
+
+1.1.4 / 2014-12-10
+==================
+
+  * deps: mime-types@~2.0.4
+    - deps: mime-db@~1.3.0
+
+1.1.3 / 2014-11-09
+==================
+
+  * deps: mime-types@~2.0.3
+    - deps: mime-db@~1.2.0
+
+1.1.2 / 2014-10-14
+==================
+
+  * deps: negotiator@0.4.9
+    - Fix error when media type has invalid parameter
+
+1.1.1 / 2014-09-28
+==================
+
+  * deps: mime-types@~2.0.2
+    - deps: mime-db@~1.1.0
+  * deps: negotiator@0.4.8
+    - Fix all negotiations to be case-insensitive
+    - Stable sort preferences of same quality according to client order
+
+1.1.0 / 2014-09-02
+==================
+
+  * update `mime-types`
+
+1.0.7 / 2014-07-04
+==================
+
+  * Fix wrong type returned from `type` when match after unknown extension
+
+1.0.6 / 2014-06-24
+==================
+
+  * deps: negotiator@0.4.7
+
+1.0.5 / 2014-06-20
+==================
+
+ * fix crash when unknown extension given
+
+1.0.4 / 2014-06-19
+==================
+
+  * use `mime-types`
+
+1.0.3 / 2014-06-11
+==================
+
+  * deps: negotiator@0.4.6
+    - Order by specificity when quality is the same
+
+1.0.2 / 2014-05-29
+==================
+
+  * Fix interpretation when header not in request
+  * deps: pin negotiator@0.4.5
+
+1.0.1 / 2014-01-18
+==================
+
+  * Identity encoding isn't always acceptable
+  * deps: negotiator@~0.4.0
+
+1.0.0 / 2013-12-27
+==================
+
+  * Genesis

backendia/node_modules/accepts/LICENSE

@@ -0,0 +1,23 @@
+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backendia/node_modules/accepts/README.md

@@ -0,0 +1,140 @@
+# accepts
+
+[![NPM Version][npm-version-image]][npm-url]
+[![NPM Downloads][npm-downloads-image]][npm-url]
+[![Node.js Version][node-version-image]][node-version-url]
+[![Build Status][github-actions-ci-image]][github-actions-ci-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+Higher level content negotiation based on [negotiator](https://www.npmjs.com/package/negotiator).
+Extracted from [koa](https://www.npmjs.com/package/koa) for general use.
+
+In addition to negotiator, it allows:
+
+- Allows types as an array or arguments list, ie `(['text/html', 'application/json'])`
+  as well as `('text/html', 'application/json')`.
+- Allows type shorthands such as `json`.
+- Returns `false` when no types match
+- Treats non-existent headers as `*`
+
+## Installation
+
+This is a [Node.js](https://nodejs.org/en/) module available through the
+[npm registry](https://www.npmjs.com/). Installation is done using the
+[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
+
+```sh
+$ npm install accepts
+```
+
+## API
+
+```js
+var accepts = require('accepts')
+```
+
+### accepts(req)
+
+Create a new `Accepts` object for the given `req`.
+
+#### .charset(charsets)
+
+Return the first accepted charset. If nothing in `charsets` is accepted,
+then `false` is returned.
+
+#### .charsets()
+
+Return the charsets that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .encoding(encodings)
+
+Return the first accepted encoding. If nothing in `encodings` is accepted,
+then `false` is returned.
+
+#### .encodings()
+
+Return the encodings that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .language(languages)
+
+Return the first accepted language. If nothing in `languages` is accepted,
+then `false` is returned.
+
+#### .languages()
+
+Return the languages that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .type(types)
+
+Return the first accepted type (and it is returned as the same text as what
+appears in the `types` array). If nothing in `types` is accepted, then `false`
+is returned.
+
+The `types` array can contain full MIME types or file extensions. Any value
+that is not a full MIME type is passed to `require('mime-types').lookup`.
+
+#### .types()
+
+Return the types that the request accepts, in the order of the client's
+preference (most preferred first).
+
+## Examples
+
+### Simple type negotiation
+
+This simple example shows how to use `accepts` to return a different typed
+respond body based on what the client wants to accept. The server lists it's
+preferences in order and will get back the best match between the client and
+server.
+
+```js
+var accepts = require('accepts')
+var http = require('http')
+
+function app (req, res) {
+  var accept = accepts(req)
+
+  // the order of this list is significant; should be server preferred order
+  switch (accept.type(['json', 'html'])) {
+    case 'json':
+      res.setHeader('Content-Type', 'application/json')
+      res.write('{"hello":"world!"}')
+      break
+    case 'html':
+      res.setHeader('Content-Type', 'text/html')
+      res.write('<b>hello, world!</b>')
+      break
+    default:
+      // the fallback is text/plain, so no need to specify it above
+      res.setHeader('Content-Type', 'text/plain')
+      res.write('hello, world!')
+      break
+  }
+
+  res.end()
+}
+
+http.createServer(app).listen(3000)
+```
+
+You can test this out with the cURL program:
+```sh
+curl -I -H'Accept: text/html' http://localhost:3000/
+```
+
+## License
+
+[MIT](LICENSE)
+
+[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/accepts/master
+[coveralls-url]: https://coveralls.io/r/jshttp/accepts?branch=master
+[github-actions-ci-image]: https://badgen.net/github/checks/jshttp/accepts/master?label=ci
+[github-actions-ci-url]: https://github.com/jshttp/accepts/actions/workflows/ci.yml
+[node-version-image]: https://badgen.net/npm/node/accepts
+[node-version-url]: https://nodejs.org/en/download
+[npm-downloads-image]: https://badgen.net/npm/dm/accepts
+[npm-url]: https://npmjs.org/package/accepts
+[npm-version-image]: https://badgen.net/npm/v/accepts

backendia/node_modules/accepts/index.js

@@ -0,0 +1,238 @@
+/*!
+ * accepts
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var Negotiator = require('negotiator')
+var mime = require('mime-types')
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = Accepts
+
+/**
+ * Create a new Accepts object for the given req.
+ *
+ * @param {object} req
+ * @public
+ */
+
+function Accepts (req) {
+  if (!(this instanceof Accepts)) {
+    return new Accepts(req)
+  }
+
+  this.headers = req.headers
+  this.negotiator = new Negotiator(req)
+}
+
+/**
+ * Check if the given `type(s)` is acceptable, returning
+ * the best match when true, otherwise `undefined`, in which
+ * case you should respond with 406 "Not Acceptable".
+ *
+ * The `type` value may be a single mime type string
+ * such as "application/json", the extension name
+ * such as "json" or an array `["json", "html", "text/plain"]`. When a list
+ * or array is given the _best_ match, if any is returned.
+ *
+ * Examples:
+ *
+ *     // Accept: text/html
+ *     this.types('html');
+ *     // => "html"
+ *
+ *     // Accept: text/*, application/json
+ *     this.types('html');
+ *     // => "html"
+ *     this.types('text/html');
+ *     // => "text/html"
+ *     this.types('json', 'text');
+ *     // => "json"
+ *     this.types('application/json');
+ *     // => "application/json"
+ *
+ *     // Accept: text/*, application/json
+ *     this.types('image/png');
+ *     this.types('png');
+ *     // => undefined
+ *
+ *     // Accept: text/*;q=.5, application/json
+ *     this.types(['html', 'json']);
+ *     this.types('html', 'json');
+ *     // => "json"
+ *
+ * @param {String|Array} types...
+ * @return {String|Array|Boolean}
+ * @public
+ */
+
+Accepts.prototype.type =
+Accepts.prototype.types = function (types_) {
+  var types = types_
+
+  // support flattened arguments
+  if (types && !Array.isArray(types)) {
+    types = new Array(arguments.length)
+    for (var i = 0; i < types.length; i++) {
+      types[i] = arguments[i]
+    }
+  }
+
+  // no types, return all requested types
+  if (!types || types.length === 0) {
+    return this.negotiator.mediaTypes()
+  }
+
+  // no accept header, return first given type
+  if (!this.headers.accept) {
+    return types[0]
+  }
+
+  var mimes = types.map(extToMime)
+  var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
+  var first = accepts[0]
+
+  return first
+    ? types[mimes.indexOf(first)]
+    : false
+}
+
+/**
+ * Return accepted encodings or best fit based on `encodings`.
+ *
+ * Given `Accept-Encoding: gzip, deflate`
+ * an array sorted by quality is returned:
+ *
+ *     ['gzip', 'deflate']
+ *
+ * @param {String|Array} encodings...
+ * @return {String|Array}
+ * @public
+ */
+
+Accepts.prototype.encoding =
+Accepts.prototype.encodings = function (encodings_) {
+  var encodings = encodings_
+
+  // support flattened arguments
+  if (encodings && !Array.isArray(encodings)) {
+    encodings = new Array(arguments.length)
+    for (var i = 0; i < encodings.length; i++) {
+      encodings[i] = arguments[i]
+    }
+  }
+
+  // no encodings, return all requested encodings
+  if (!encodings || encodings.length === 0) {
+    return this.negotiator.encodings()
+  }
+
+  return this.negotiator.encodings(encodings)[0] || false
+}
+
+/**
+ * Return accepted charsets or best fit based on `charsets`.
+ *
+ * Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
+ * an array sorted by quality is returned:
+ *
+ *     ['utf-8', 'utf-7', 'iso-8859-1']
+ *
+ * @param {String|Array} charsets...
+ * @return {String|Array}
+ * @public
+ */
+
+Accepts.prototype.charset =
+Accepts.prototype.charsets = function (charsets_) {
+  var charsets = charsets_
+
+  // support flattened arguments
+  if (charsets && !Array.isArray(charsets)) {
+    charsets = new Array(arguments.length)
+    for (var i = 0; i < charsets.length; i++) {
+      charsets[i] = arguments[i]
+    }
+  }
+
+  // no charsets, return all requested charsets
+  if (!charsets || charsets.length === 0) {
+    return this.negotiator.charsets()
+  }
+
+  return this.negotiator.charsets(charsets)[0] || false
+}
+
+/**
+ * Return accepted languages or best fit based on `langs`.
+ *
+ * Given `Accept-Language: en;q=0.8, es, pt`
+ * an array sorted by quality is returned:
+ *
+ *     ['es', 'pt', 'en']
+ *
+ * @param {String|Array} langs...
+ * @return {Array|String}
+ * @public
+ */
+
+Accepts.prototype.lang =
+Accepts.prototype.langs =
+Accepts.prototype.language =
+Accepts.prototype.languages = function (languages_) {
+  var languages = languages_
+
+  // support flattened arguments
+  if (languages && !Array.isArray(languages)) {
+    languages = new Array(arguments.length)
+    for (var i = 0; i < languages.length; i++) {
+      languages[i] = arguments[i]
+    }
+  }
+
+  // no languages, return all requested languages
+  if (!languages || languages.length === 0) {
+    return this.negotiator.languages()
+  }
+
+  return this.negotiator.languages(languages)[0] || false
+}
+
+/**
+ * Convert extnames to mime.
+ *
+ * @param {String} type
+ * @return {String}
+ * @private
+ */
+
+function extToMime (type) {
+  return type.indexOf('/') === -1
+    ? mime.lookup(type)
+    : type
+}
+
+/**
+ * Check if mime is valid.
+ *
+ * @param {String} type
+ * @return {Boolean}
+ * @private
+ */
+
+function validMime (type) {
+  return typeof type === 'string'
+}

backendia/node_modules/accepts/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "accepts",
+  "description": "Higher-level content negotiation",
+  "version": "2.0.0",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
+  ],
+  "license": "MIT",
+  "repository": "jshttp/accepts",
+  "dependencies": {
+    "mime-types": "^3.0.0",
+    "negotiator": "^1.0.0"
+  },
+  "devDependencies": {
+    "deep-equal": "1.0.1",
+    "eslint": "7.32.0",
+    "eslint-config-standard": "14.1.1",
+    "eslint-plugin-import": "2.25.4",
+    "eslint-plugin-markdown": "2.2.1",
+    "eslint-plugin-node": "11.1.0",
+    "eslint-plugin-promise": "4.3.1",
+    "eslint-plugin-standard": "4.1.0",
+    "mocha": "9.2.0",
+    "nyc": "15.1.0"
+  },
+  "files": [
+    "LICENSE",
+    "HISTORY.md",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "test": "mocha --reporter spec --check-leaks --bail test/",
+    "test-ci": "nyc --reporter=lcov --reporter=text npm test",
+    "test-cov": "nyc --reporter=html --reporter=text npm test"
+  },
+  "keywords": [
+    "content",
+    "negotiation",
+    "accept",
+    "accepts"
+  ]
+}

backendia/node_modules/adm-zip/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2012 Another-D-Mention Software and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

backendia/node_modules/adm-zip/README.md

@@ -0,0 +1,87 @@
+# ADM-ZIP for NodeJS
+
+ADM-ZIP is a pure JavaScript implementation for zip data compression for [NodeJS](https://nodejs.org/).
+
+<a href="https://github.com/cthackers/adm-zip/actions/workflows/ci.yml">
+  <img src="https://github.com/cthackers/adm-zip/actions/workflows/ci.yml/badge.svg" alt="Build Status">
+</a>
+
+# Installation
+
+With [npm](https://www.npmjs.com/) do:
+
+    $ npm install adm-zip
+
+**Electron** file system support described below.
+
+## What is it good for?
+
+The library allows you to:
+
+-   decompress zip files directly to disk or in memory buffers
+-   compress files and store them to disk in .zip format or in compressed buffers
+-   update content of/add new/delete files from an existing .zip
+
+# Dependencies
+
+There are no other nodeJS libraries that ADM-ZIP is dependent of
+
+# Examples
+
+## Basic usage
+
+```javascript
+var AdmZip = require("adm-zip");
+
+// reading archives
+var zip = new AdmZip("./my_file.zip");
+var password = "1234567890";
+var zipEntries = zip.getEntries(); // an array of ZipEntry records - add password parameter if entries are password protected
+
+zipEntries.forEach(function (zipEntry) {
+    console.log(zipEntry.toString()); // outputs zip entries information
+    if (zipEntry.entryName == "my_file.txt") {
+        console.log(zipEntry.getData().toString("utf8"));
+    }
+});
+// outputs the content of some_folder/my_file.txt
+console.log(zip.readAsText("some_folder/my_file.txt"));
+// extracts the specified file to the specified location
+zip.extractEntryTo(/*entry name*/ "some_folder/my_file.txt", /*target path*/ "/home/me/tempfolder", /*maintainEntryPath*/ false, /*overwrite*/ true);
+// extracts everything
+zip.extractAllTo(/*target path*/ "/home/me/zipcontent/", /*overwrite*/ true);
+
+// creating archives
+var zip = new AdmZip();
+
+// add file directly
+var content = "inner content of the file";
+zip.addFile("test.txt", Buffer.from(content, "utf8"), "entry comment goes here");
+// add local file
+zip.addLocalFile("/home/me/some_picture.png");
+// get everything as a buffer
+var willSendthis = zip.toBuffer();
+// or write everything to disk
+zip.writeZip(/*target file name*/ "/home/me/files.zip");
+
+// ... more examples in the wiki
+```
+
+For more detailed information please check out the [wiki](https://github.com/cthackers/adm-zip/wiki).
+
+## Electron original-fs
+
+ADM-ZIP has supported electron **original-fs** for years without any user interractions but it causes problem with bundlers like rollup etc. For continuing support **original-fs** or any other custom file system module. There is possible specify your module by **fs** option in ADM-ZIP constructor.
+
+Example:
+
+```javascript
+const AdmZip = require("adm-zip");
+const OriginalFs = require("original-fs");
+
+// reading archives
+const zip = new AdmZip("./my_file.zip", { fs: OriginalFs });
+.
+.
+.
+```

backendia/node_modules/adm-zip/adm-zip.js

@@ -0,0 +1,949 @@
+const Utils = require("./util");
+const pth = require("path");
+const ZipEntry = require("./zipEntry");
+const ZipFile = require("./zipFile");
+
+const get_Bool = (...val) => Utils.findLast(val, (c) => typeof c === "boolean");
+const get_Str = (...val) => Utils.findLast(val, (c) => typeof c === "string");
+const get_Fun = (...val) => Utils.findLast(val, (c) => typeof c === "function");
+
+const defaultOptions = {
+    // option "noSort" : if true it disables files sorting
+    noSort: false,
+    // read entries during load (initial loading may be slower)
+    readEntries: false,
+    // default method is none
+    method: Utils.Constants.NONE,
+    // file system
+    fs: null
+};
+
+module.exports = function (/**String*/ input, /** object */ options) {
+    let inBuffer = null;
+
+    // create object based default options, allowing them to be overwritten
+    const opts = Object.assign(Object.create(null), defaultOptions);
+
+    // test input variable
+    if (input && "object" === typeof input) {
+        // if value is not buffer we accept it to be object with options
+        if (!(input instanceof Uint8Array)) {
+            Object.assign(opts, input);
+            input = opts.input ? opts.input : undefined;
+            if (opts.input) delete opts.input;
+        }
+
+        // if input is buffer
+        if (Buffer.isBuffer(input)) {
+            inBuffer = input;
+            opts.method = Utils.Constants.BUFFER;
+            input = undefined;
+        }
+    }
+
+    // assign options
+    Object.assign(opts, options);
+
+    // instanciate utils filesystem
+    const filetools = new Utils(opts);
+
+    if (typeof opts.decoder !== "object" || typeof opts.decoder.encode !== "function" || typeof opts.decoder.decode !== "function") {
+        opts.decoder = Utils.decoder;
+    }
+
+    // if input is file name we retrieve its content
+    if (input && "string" === typeof input) {
+        // load zip file
+        if (filetools.fs.existsSync(input)) {
+            opts.method = Utils.Constants.FILE;
+            opts.filename = input;
+            inBuffer = filetools.fs.readFileSync(input);
+        } else {
+            throw Utils.Errors.INVALID_FILENAME();
+        }
+    }
+
+    // create variable
+    const _zip = new ZipFile(inBuffer, opts);
+
+    const { canonical, sanitize, zipnamefix } = Utils;
+
+    function getEntry(/**Object*/ entry) {
+        if (entry && _zip) {
+            var item;
+            // If entry was given as a file name
+            if (typeof entry === "string") item = _zip.getEntry(pth.posix.normalize(entry));
+            // if entry was given as a ZipEntry object
+            if (typeof entry === "object" && typeof entry.entryName !== "undefined" && typeof entry.header !== "undefined") item = _zip.getEntry(entry.entryName);
+
+            if (item) {
+                return item;
+            }
+        }
+        return null;
+    }
+
+    function fixPath(zipPath) {
+        const { join, normalize, sep } = pth.posix;
+        // convert windows file separators and normalize
+        return join(pth.isAbsolute(zipPath) ? "/": '.',  normalize(sep + zipPath.split("\\").join(sep) + sep));
+    }
+
+    function filenameFilter(filterfn) {
+        if (filterfn instanceof RegExp) {
+            // if filter is RegExp wrap it
+            return (function (rx) {
+                return function (filename) {
+                    return rx.test(filename);
+                };
+            })(filterfn);
+        } else if ("function" !== typeof filterfn) {
+            // if filter is not function we will replace it
+            return () => true;
+        }
+        return filterfn;
+    }
+
+    // keep last character on folders
+    const relativePath = (local, entry) => {
+        let lastChar = entry.slice(-1);
+        lastChar = lastChar === filetools.sep ? filetools.sep : "";
+        return pth.relative(local, entry) + lastChar;
+    };
+
+    return {
+        /**
+         * Extracts the given entry from the archive and returns the content as a Buffer object
+         * @param {ZipEntry|string} entry ZipEntry object or String with the full path of the entry
+         * @param {Buffer|string} [pass] - password
+         * @return Buffer or Null in case of error
+         */
+        readFile: function (entry, pass) {
+            var item = getEntry(entry);
+            return (item && item.getData(pass)) || null;
+        },
+
+        /**
+         * Returns how many child elements has on entry (directories) on files it is always 0
+         * @param {ZipEntry|string} entry ZipEntry object or String with the full path of the entry
+         * @returns {integer}
+         */
+        childCount: function (entry) {
+            const item = getEntry(entry);
+            if (item) {
+                return _zip.getChildCount(item);
+            }
+        },
+
+        /**
+         * Asynchronous readFile
+         * @param {ZipEntry|string} entry ZipEntry object or String with the full path of the entry
+         * @param {callback} callback
+         *
+         * @return Buffer or Null in case of error
+         */
+        readFileAsync: function (entry, callback) {
+            var item = getEntry(entry);
+            if (item) {
+                item.getDataAsync(callback);
+            } else {
+                callback(null, "getEntry failed for:" + entry);
+            }
+        },
+
+        /**
+         * Extracts the given entry from the archive and returns the content as plain text in the given encoding
+         * @param {ZipEntry|string} entry - ZipEntry object or String with the full path of the entry
+         * @param {string} encoding - Optional. If no encoding is specified utf8 is used
+         *
+         * @return String
+         */
+        readAsText: function (entry, encoding) {
+            var item = getEntry(entry);
+            if (item) {
+                var data = item.getData();
+                if (data && data.length) {
+                    return data.toString(encoding || "utf8");
+                }
+            }
+            return "";
+        },
+
+        /**
+         * Asynchronous readAsText
+         * @param {ZipEntry|string} entry ZipEntry object or String with the full path of the entry
+         * @param {callback} callback
+         * @param {string} [encoding] - Optional. If no encoding is specified utf8 is used
+         *
+         * @return String
+         */
+        readAsTextAsync: function (entry, callback, encoding) {
+            var item = getEntry(entry);
+            if (item) {
+                item.getDataAsync(function (data, err) {
+                    if (err) {
+                        callback(data, err);
+                        return;
+                    }
+
+                    if (data && data.length) {
+                        callback(data.toString(encoding || "utf8"));
+                    } else {
+                        callback("");
+                    }
+                });
+            } else {
+                callback("");
+            }
+        },
+
+        /**
+         * Remove the entry from the file or the entry and all it's nested directories and files if the given entry is a directory
+         *
+         * @param {ZipEntry|string} entry
+         * @returns {void}
+         */
+        deleteFile: function (entry, withsubfolders = true) {
+            // @TODO: test deleteFile
+            var item = getEntry(entry);
+            if (item) {
+                _zip.deleteFile(item.entryName, withsubfolders);
+            }
+        },
+
+        /**
+         * Remove the entry from the file or directory without affecting any nested entries
+         *
+         * @param {ZipEntry|string} entry
+         * @returns {void}
+         */
+        deleteEntry: function (entry) {
+            // @TODO: test deleteEntry
+            var item = getEntry(entry);
+            if (item) {
+                _zip.deleteEntry(item.entryName);
+            }
+        },
+
+        /**
+         * Adds a comment to the zip. The zip must be rewritten after adding the comment.
+         *
+         * @param {string} comment
+         */
+        addZipComment: function (comment) {
+            // @TODO: test addZipComment
+            _zip.comment = comment;
+        },
+
+        /**
+         * Returns the zip comment
+         *
+         * @return String
+         */
+        getZipComment: function () {
+            return _zip.comment || "";
+        },
+
+        /**
+         * Adds a comment to a specified zipEntry. The zip must be rewritten after adding the comment
+         * The comment cannot exceed 65535 characters in length
+         *
+         * @param {ZipEntry} entry
+         * @param {string} comment
+         */
+        addZipEntryComment: function (entry, comment) {
+            var item = getEntry(entry);
+            if (item) {
+                item.comment = comment;
+            }
+        },
+
+        /**
+         * Returns the comment of the specified entry
+         *
+         * @param {ZipEntry} entry
+         * @return String
+         */
+        getZipEntryComment: function (entry) {
+            var item = getEntry(entry);
+            if (item) {
+                return item.comment || "";
+            }
+            return "";
+        },
+
+        /**
+         * Updates the content of an existing entry inside the archive. The zip must be rewritten after updating the content
+         *
+         * @param {ZipEntry} entry
+         * @param {Buffer} content
+         */
+        updateFile: function (entry, content) {
+            var item = getEntry(entry);
+            if (item) {
+                item.setData(content);
+            }
+        },
+
+        /**
+         * Adds a file from the disk to the archive
+         *
+         * @param {string} localPath File to add to zip
+         * @param {string} [zipPath] Optional path inside the zip
+         * @param {string} [zipName] Optional name for the file
+         * @param {string} [comment] Optional file comment
+         */
+        addLocalFile: function (localPath, zipPath, zipName, comment) {
+            if (filetools.fs.existsSync(localPath)) {
+                // fix ZipPath
+                zipPath = zipPath ? fixPath(zipPath) : "";
+
+                // p - local file name
+                const p = pth.win32.basename(pth.win32.normalize(localPath));
+
+                // add file name into zippath
+                zipPath += zipName ? zipName : p;
+
+                // read file attributes
+                const _attr = filetools.fs.statSync(localPath);
+
+                // get file content
+                const data = _attr.isFile() ? filetools.fs.readFileSync(localPath) : Buffer.alloc(0);
+
+                // if folder
+                if (_attr.isDirectory()) zipPath += filetools.sep;
+
+                // add file into zip file
+                this.addFile(zipPath, data, comment, _attr);
+            } else {
+                throw Utils.Errors.FILE_NOT_FOUND(localPath);
+            }
+        },
+
+        /**
+         * Callback for showing if everything was done.
+         *
+         * @callback doneCallback
+         * @param {Error} err - Error object
+         * @param {boolean} done - was request fully completed
+         */
+
+        /**
+         * Adds a file from the disk to the archive
+         *
+         * @param {(object|string)} options - options object, if it is string it us used as localPath.
+         * @param {string} options.localPath - Local path to the file.
+         * @param {string} [options.comment] - Optional file comment.
+         * @param {string} [options.zipPath] - Optional path inside the zip
+         * @param {string} [options.zipName] - Optional name for the file
+         * @param {doneCallback} callback - The callback that handles the response.
+         */
+        addLocalFileAsync: function (options, callback) {
+            options = typeof options === "object" ? options : { localPath: options };
+            const localPath = pth.resolve(options.localPath);
+            const { comment } = options;
+            let { zipPath, zipName } = options;
+            const self = this;
+
+            filetools.fs.stat(localPath, function (err, stats) {
+                if (err) return callback(err, false);
+                // fix ZipPath
+                zipPath = zipPath ? fixPath(zipPath) : "";
+                // p - local file name
+                const p = pth.win32.basename(pth.win32.normalize(localPath));
+                // add file name into zippath
+                zipPath += zipName ? zipName : p;
+
+                if (stats.isFile()) {
+                    filetools.fs.readFile(localPath, function (err, data) {
+                        if (err) return callback(err, false);
+                        self.addFile(zipPath, data, comment, stats);
+                        return setImmediate(callback, undefined, true);
+                    });
+                } else if (stats.isDirectory()) {
+                    zipPath += filetools.sep;
+                    self.addFile(zipPath, Buffer.alloc(0), comment, stats);
+                    return setImmediate(callback, undefined, true);
+                }
+            });
+        },
+
+        /**
+         * Adds a local directory and all its nested files and directories to the archive
+         *
+         * @param {string} localPath - local path to the folder
+         * @param {string} [zipPath] - optional path inside zip
+         * @param {(RegExp|function)} [filter] - optional RegExp or Function if files match will be included.
+         */
+        addLocalFolder: function (localPath, zipPath, filter) {
+            // Prepare filter
+            filter = filenameFilter(filter);
+
+            // fix ZipPath
+            zipPath = zipPath ? fixPath(zipPath) : "";
+
+            // normalize the path first
+            localPath = pth.normalize(localPath);
+
+            if (filetools.fs.existsSync(localPath)) {
+                const items = filetools.findFiles(localPath);
+                const self = this;
+
+                if (items.length) {
+                    for (const filepath of items) {
+                        const p = pth.join(zipPath, relativePath(localPath, filepath));
+                        if (filter(p)) {
+                            self.addLocalFile(filepath, pth.dirname(p));
+                        }
+                    }
+                }
+            } else {
+                throw Utils.Errors.FILE_NOT_FOUND(localPath);
+            }
+        },
+
+        /**
+         * Asynchronous addLocalFolder
+         * @param {string} localPath
+         * @param {callback} callback
+         * @param {string} [zipPath] optional path inside zip
+         * @param {RegExp|function} [filter] optional RegExp or Function if files match will
+         *               be included.
+         */
+        addLocalFolderAsync: function (localPath, callback, zipPath, filter) {
+            // Prepare filter
+            filter = filenameFilter(filter);
+
+            // fix ZipPath
+            zipPath = zipPath ? fixPath(zipPath) : "";
+
+            // normalize the path first
+            localPath = pth.normalize(localPath);
+
+            var self = this;
+            filetools.fs.open(localPath, "r", function (err) {
+                if (err && err.code === "ENOENT") {
+                    callback(undefined, Utils.Errors.FILE_NOT_FOUND(localPath));
+                } else if (err) {
+                    callback(undefined, err);
+                } else {
+                    var items = filetools.findFiles(localPath);
+                    var i = -1;
+
+                    var next = function () {
+                        i += 1;
+                        if (i < items.length) {
+                            var filepath = items[i];
+                            var p = relativePath(localPath, filepath).split("\\").join("/"); //windows fix
+                            p = p
+                                .normalize("NFD")
+                                .replace(/[\u0300-\u036f]/g, "")
+                                .replace(/[^\x20-\x7E]/g, ""); // accent fix
+                            if (filter(p)) {
+                                filetools.fs.stat(filepath, function (er0, stats) {
+                                    if (er0) callback(undefined, er0);
+                                    if (stats.isFile()) {
+                                        filetools.fs.readFile(filepath, function (er1, data) {
+                                            if (er1) {
+                                                callback(undefined, er1);
+                                            } else {
+                                                self.addFile(zipPath + p, data, "", stats);
+                                                next();
+                                            }
+                                        });
+                                    } else {
+                                        self.addFile(zipPath + p + "/", Buffer.alloc(0), "", stats);
+                                        next();
+                                    }
+                                });
+                            } else {
+                                process.nextTick(() => {
+                                    next();
+                                });
+                            }
+                        } else {
+                            callback(true, undefined);
+                        }
+                    };
+
+                    next();
+                }
+            });
+        },
+
+        /**
+         * Adds a local directory and all its nested files and directories to the archive
+         *
+         * @param {object | string} options - options object, if it is string it us used as localPath.
+         * @param {string} options.localPath - Local path to the folder.
+         * @param {string} [options.zipPath] - optional path inside zip.
+         * @param {RegExp|function} [options.filter] - optional RegExp or Function if files match will be included.
+         * @param {function|string} [options.namefix] - optional function to help fix filename
+         * @param {doneCallback} callback - The callback that handles the response.
+         *
+         */
+        addLocalFolderAsync2: function (options, callback) {
+            const self = this;
+            options = typeof options === "object" ? options : { localPath: options };
+            localPath = pth.resolve(fixPath(options.localPath));
+            let { zipPath, filter, namefix } = options;
+
+            if (filter instanceof RegExp) {
+                filter = (function (rx) {
+                    return function (filename) {
+                        return rx.test(filename);
+                    };
+                })(filter);
+            } else if ("function" !== typeof filter) {
+                filter = function () {
+                    return true;
+                };
+            }
+
+            // fix ZipPath
+            zipPath = zipPath ? fixPath(zipPath) : "";
+
+            // Check Namefix function
+            if (namefix == "latin1") {
+                namefix = (str) =>
+                    str
+                        .normalize("NFD")
+                        .replace(/[\u0300-\u036f]/g, "")
+                        .replace(/[^\x20-\x7E]/g, ""); // accent fix (latin1 characers only)
+            }
+
+            if (typeof namefix !== "function") namefix = (str) => str;
+
+            // internal, create relative path + fix the name
+            const relPathFix = (entry) => pth.join(zipPath, namefix(relativePath(localPath, entry)));
+            const fileNameFix = (entry) => pth.win32.basename(pth.win32.normalize(namefix(entry)));
+
+            filetools.fs.open(localPath, "r", function (err) {
+                if (err && err.code === "ENOENT") {
+                    callback(undefined, Utils.Errors.FILE_NOT_FOUND(localPath));
+                } else if (err) {
+                    callback(undefined, err);
+                } else {
+                    filetools.findFilesAsync(localPath, function (err, fileEntries) {
+                        if (err) return callback(err);
+                        fileEntries = fileEntries.filter((dir) => filter(relPathFix(dir)));
+                        if (!fileEntries.length) callback(undefined, false);
+
+                        setImmediate(
+                            fileEntries.reverse().reduce(function (next, entry) {
+                                return function (err, done) {
+                                    if (err || done === false) return setImmediate(next, err, false);
+
+                                    self.addLocalFileAsync(
+                                        {
+                                            localPath: entry,
+                                            zipPath: pth.dirname(relPathFix(entry)),
+                                            zipName: fileNameFix(entry)
+                                        },
+                                        next
+                                    );
+                                };
+                            }, callback)
+                        );
+                    });
+                }
+            });
+        },
+
+        /**
+         * Adds a local directory and all its nested files and directories to the archive
+         *
+         * @param {string} localPath - path where files will be extracted
+         * @param {object} props - optional properties
+         * @param {string} [props.zipPath] - optional path inside zip
+         * @param {RegExp|function} [props.filter] - optional RegExp or Function if files match will be included.
+         * @param {function|string} [props.namefix] - optional function to help fix filename
+         */
+        addLocalFolderPromise: function (localPath, props) {
+            return new Promise((resolve, reject) => {
+                this.addLocalFolderAsync2(Object.assign({ localPath }, props), (err, done) => {
+                    if (err) reject(err);
+                    if (done) resolve(this);
+                });
+            });
+        },
+
+        /**
+         * Allows you to create a entry (file or directory) in the zip file.
+         * If you want to create a directory the entryName must end in / and a null buffer should be provided.
+         * Comment and attributes are optional
+         *
+         * @param {string} entryName
+         * @param {Buffer | string} content - file content as buffer or utf8 coded string
+         * @param {string} [comment] - file comment
+         * @param {number | object} [attr] - number as unix file permissions, object as filesystem Stats object
+         */
+        addFile: function (entryName, content, comment, attr) {
+            entryName = zipnamefix(entryName);
+            let entry = getEntry(entryName);
+            const update = entry != null;
+
+            // prepare new entry
+            if (!update) {
+                entry = new ZipEntry(opts);
+                entry.entryName = entryName;
+            }
+            entry.comment = comment || "";
+
+            const isStat = "object" === typeof attr && attr instanceof filetools.fs.Stats;
+
+            // last modification time from file stats
+            if (isStat) {
+                entry.header.time = attr.mtime;
+            }
+
+            // Set file attribute
+            var fileattr = entry.isDirectory ? 0x10 : 0; // (MS-DOS directory flag)
+
+            // extended attributes field for Unix
+            // set file type either S_IFDIR / S_IFREG
+            let unix = entry.isDirectory ? 0x4000 : 0x8000;
+
+            if (isStat) {
+                // File attributes from file stats
+                unix |= 0xfff & attr.mode;
+            } else if ("number" === typeof attr) {
+                // attr from given attr values
+                unix |= 0xfff & attr;
+            } else {
+                // Default values:
+                unix |= entry.isDirectory ? 0o755 : 0o644; // permissions (drwxr-xr-x) or (-r-wr--r--)
+            }
+
+            fileattr = (fileattr | (unix << 16)) >>> 0; // add attributes
+
+            entry.attr = fileattr;
+
+            entry.setData(content);
+            if (!update) _zip.setEntry(entry);
+
+            return entry;
+        },
+
+        /**
+         * Returns an array of ZipEntry objects representing the files and folders inside the archive
+         *
+         * @param {string} [password]
+         * @returns Array
+         */
+        getEntries: function (password) {
+            _zip.password = password;
+            return _zip ? _zip.entries : [];
+        },
+
+        /**
+         * Returns a ZipEntry object representing the file or folder specified by ``name``.
+         *
+         * @param {string} name
+         * @return ZipEntry
+         */
+        getEntry: function (/**String*/ name) {
+            return getEntry(name);
+        },
+
+        getEntryCount: function () {
+            return _zip.getEntryCount();
+        },
+
+        forEach: function (callback) {
+            return _zip.forEach(callback);
+        },
+
+        /**
+         * Extracts the given entry to the given targetPath
+         * If the entry is a directory inside the archive, the entire directory and it's subdirectories will be extracted
+         *
+         * @param {string|ZipEntry} entry - ZipEntry object or String with the full path of the entry
+         * @param {string} targetPath - Target folder where to write the file
+         * @param {boolean} [maintainEntryPath=true] - If maintainEntryPath is true and the entry is inside a folder, the entry folder will be created in targetPath as well. Default is TRUE
+         * @param {boolean} [overwrite=false] - If the file already exists at the target path, the file will be overwriten if this is true.
+         * @param {boolean} [keepOriginalPermission=false] - The file will be set as the permission from the entry if this is true.
+         * @param {string} [outFileName] - String If set will override the filename of the extracted file (Only works if the entry is a file)
+         *
+         * @return Boolean
+         */
+        extractEntryTo: function (entry, targetPath, maintainEntryPath, overwrite, keepOriginalPermission, outFileName) {
+            overwrite = get_Bool(false, overwrite);
+            keepOriginalPermission = get_Bool(false, keepOriginalPermission);
+            maintainEntryPath = get_Bool(true, maintainEntryPath);
+            outFileName = get_Str(keepOriginalPermission, outFileName);
+
+            var item = getEntry(entry);
+            if (!item) {
+                throw Utils.Errors.NO_ENTRY();
+            }
+
+            var entryName = canonical(item.entryName);
+
+            var target = sanitize(targetPath, outFileName && !item.isDirectory ? outFileName : maintainEntryPath ? entryName : pth.basename(entryName));
+
+            if (item.isDirectory) {
+                var children = _zip.getEntryChildren(item);
+                children.forEach(function (child) {
+                    if (child.isDirectory) return;
+                    var content = child.getData();
+                    if (!content) {
+                        throw Utils.Errors.CANT_EXTRACT_FILE();
+                    }
+                    var name = canonical(child.entryName);
+                    var childName = sanitize(targetPath, maintainEntryPath ? name : pth.basename(name));
+                    // The reverse operation for attr depend on method addFile()
+                    const fileAttr = keepOriginalPermission ? child.header.fileAttr : undefined;
+                    filetools.writeFileTo(childName, content, overwrite, fileAttr);
+                });
+                return true;
+            }
+
+            var content = item.getData(_zip.password);
+            if (!content) throw Utils.Errors.CANT_EXTRACT_FILE();
+
+            if (filetools.fs.existsSync(target) && !overwrite) {
+                throw Utils.Errors.CANT_OVERRIDE();
+            }
+            // The reverse operation for attr depend on method addFile()
+            const fileAttr = keepOriginalPermission ? entry.header.fileAttr : undefined;
+            filetools.writeFileTo(target, content, overwrite, fileAttr);
+
+            return true;
+        },
+
+        /**
+         * Test the archive
+         * @param {string} [pass]
+         */
+        test: function (pass) {
+            if (!_zip) {
+                return false;
+            }
+
+            for (var entry in _zip.entries) {
+                try {
+                    if (entry.isDirectory) {
+                        continue;
+                    }
+                    var content = _zip.entries[entry].getData(pass);
+                    if (!content) {
+                        return false;
+                    }
+                } catch (err) {
+                    return false;
+                }
+            }
+            return true;
+        },
+
+        /**
+         * Extracts the entire archive to the given location
+         *
+         * @param {string} targetPath Target location
+         * @param {boolean} [overwrite=false] If the file already exists at the target path, the file will be overwriten if this is true.
+         *                  Default is FALSE
+         * @param {boolean} [keepOriginalPermission=false] The file will be set as the permission from the entry if this is true.
+         *                  Default is FALSE
+         * @param {string|Buffer} [pass] password
+         */
+        extractAllTo: function (targetPath, overwrite, keepOriginalPermission, pass) {
+            keepOriginalPermission = get_Bool(false, keepOriginalPermission);
+            pass = get_Str(keepOriginalPermission, pass);
+            overwrite = get_Bool(false, overwrite);
+            if (!_zip) throw Utils.Errors.NO_ZIP();
+
+            _zip.entries.forEach(function (entry) {
+                var entryName = sanitize(targetPath, canonical(entry.entryName));
+                if (entry.isDirectory) {
+                    filetools.makeDir(entryName);
+                    return;
+                }
+                var content = entry.getData(pass);
+                if (!content) {
+                    throw Utils.Errors.CANT_EXTRACT_FILE();
+                }
+                // The reverse operation for attr depend on method addFile()
+                const fileAttr = keepOriginalPermission ? entry.header.fileAttr : undefined;
+                filetools.writeFileTo(entryName, content, overwrite, fileAttr);
+                try {
+                    filetools.fs.utimesSync(entryName, entry.header.time, entry.header.time);
+                } catch (err) {
+                    throw Utils.Errors.CANT_EXTRACT_FILE();
+                }
+            });
+        },
+
+        /**
+         * Asynchronous extractAllTo
+         *
+         * @param {string} targetPath Target location
+         * @param {boolean} [overwrite=false] If the file already exists at the target path, the file will be overwriten if this is true.
+         *                  Default is FALSE
+         * @param {boolean} [keepOriginalPermission=false] The file will be set as the permission from the entry if this is true.
+         *                  Default is FALSE
+         * @param {function} callback The callback will be executed when all entries are extracted successfully or any error is thrown.
+         */
+        extractAllToAsync: function (targetPath, overwrite, keepOriginalPermission, callback) {
+            callback = get_Fun(overwrite, keepOriginalPermission, callback);
+            keepOriginalPermission = get_Bool(false, keepOriginalPermission);
+            overwrite = get_Bool(false, overwrite);
+            if (!callback) {
+                return new Promise((resolve, reject) => {
+                    this.extractAllToAsync(targetPath, overwrite, keepOriginalPermission, function (err) {
+                        if (err) {
+                            reject(err);
+                        } else {
+                            resolve(this);
+                        }
+                    });
+                });
+            }
+            if (!_zip) {
+                callback(Utils.Errors.NO_ZIP());
+                return;
+            }
+
+            targetPath = pth.resolve(targetPath);
+            // convert entryName to
+            const getPath = (entry) => sanitize(targetPath, pth.normalize(canonical(entry.entryName)));
+            const getError = (msg, file) => new Error(msg + ': "' + file + '"');
+
+            // separate directories from files
+            const dirEntries = [];
+            const fileEntries = [];
+            _zip.entries.forEach((e) => {
+                if (e.isDirectory) {
+                    dirEntries.push(e);
+                } else {
+                    fileEntries.push(e);
+                }
+            });
+
+            // Create directory entries first synchronously
+            // this prevents race condition and assures folders are there before writing files
+            for (const entry of dirEntries) {
+                const dirPath = getPath(entry);
+                // The reverse operation for attr depend on method addFile()
+                const dirAttr = keepOriginalPermission ? entry.header.fileAttr : undefined;
+                try {
+                    filetools.makeDir(dirPath);
+                    if (dirAttr) filetools.fs.chmodSync(dirPath, dirAttr);
+                    // in unix timestamp will change if files are later added to folder, but still
+                    filetools.fs.utimesSync(dirPath, entry.header.time, entry.header.time);
+                } catch (er) {
+                    callback(getError("Unable to create folder", dirPath));
+                }
+            }
+
+            fileEntries.reverse().reduce(function (next, entry) {
+                return function (err) {
+                    if (err) {
+                        next(err);
+                    } else {
+                        const entryName = pth.normalize(canonical(entry.entryName));
+                        const filePath = sanitize(targetPath, entryName);
+                        entry.getDataAsync(function (content, err_1) {
+                            if (err_1) {
+                                next(err_1);
+                            } else if (!content) {
+                                next(Utils.Errors.CANT_EXTRACT_FILE());
+                            } else {
+                                // The reverse operation for attr depend on method addFile()
+                                const fileAttr = keepOriginalPermission ? entry.header.fileAttr : undefined;
+                                filetools.writeFileToAsync(filePath, content, overwrite, fileAttr, function (succ) {
+                                    if (!succ) {
+                                        next(getError("Unable to write file", filePath));
+                                    }
+                                    filetools.fs.utimes(filePath, entry.header.time, entry.header.time, function (err_2) {
+                                        if (err_2) {
+                                            next(getError("Unable to set times", filePath));
+                                        } else {
+                                            next();
+                                        }
+                                    });
+                                });
+                            }
+                        });
+                    }
+                };
+            }, callback)();
+        },
+
+        /**
+         * Writes the newly created zip file to disk at the specified location or if a zip was opened and no ``targetFileName`` is provided, it will overwrite the opened zip
+         *
+         * @param {string} targetFileName
+         * @param {function} callback
+         */
+        writeZip: function (targetFileName, callback) {
+            if (arguments.length === 1) {
+                if (typeof targetFileName === "function") {
+                    callback = targetFileName;
+                    targetFileName = "";
+                }
+            }
+
+            if (!targetFileName && opts.filename) {
+                targetFileName = opts.filename;
+            }
+            if (!targetFileName) return;
+
+            var zipData = _zip.compressToBuffer();
+            if (zipData) {
+                var ok = filetools.writeFileTo(targetFileName, zipData, true);
+                if (typeof callback === "function") callback(!ok ? new Error("failed") : null, "");
+            }
+        },
+
+        /**
+         *
+         * @param {string} targetFileName
+         * @param {object} [props]
+         * @param {boolean} [props.overwrite=true] If the file already exists at the target path, the file will be overwriten if this is true.
+         * @param {boolean} [props.perm] The file will be set as the permission from the entry if this is true.
+
+         * @returns {Promise<void>}
+         */
+        writeZipPromise: function (/**String*/ targetFileName, /* object */ props) {
+            const { overwrite, perm } = Object.assign({ overwrite: true }, props);
+
+            return new Promise((resolve, reject) => {
+                // find file name
+                if (!targetFileName && opts.filename) targetFileName = opts.filename;
+                if (!targetFileName) reject("ADM-ZIP: ZIP File Name Missing");
+
+                this.toBufferPromise().then((zipData) => {
+                    const ret = (done) => (done ? resolve(done) : reject("ADM-ZIP: Wasn't able to write zip file"));
+                    filetools.writeFileToAsync(targetFileName, zipData, overwrite, perm, ret);
+                }, reject);
+            });
+        },
+
+        /**
+         * @returns {Promise<Buffer>} A promise to the Buffer.
+         */
+        toBufferPromise: function () {
+            return new Promise((resolve, reject) => {
+                _zip.toAsyncBuffer(resolve, reject);
+            });
+        },
+
+        /**
+         * Returns the content of the entire zip file as a Buffer object
+         *
+         * @prop {function} [onSuccess]
+         * @prop {function} [onFail]
+         * @prop {function} [onItemStart]
+         * @prop {function} [onItemEnd]
+         * @returns {Buffer}
+         */
+        toBuffer: function (onSuccess, onFail, onItemStart, onItemEnd) {
+            if (typeof onSuccess === "function") {
+                _zip.toAsyncBuffer(onSuccess, onFail, onItemStart, onItemEnd);
+                return null;
+            }
+            return _zip.compressToBuffer();
+        }
+    };
+};

backendia/node_modules/adm-zip/headers/entryHeader.js

@@ -0,0 +1,377 @@
+var Utils = require("../util"),
+    Constants = Utils.Constants;
+
+/* The central directory file header */
+module.exports = function () {
+    var _verMade = 20, // v2.0
+        _version = 10, // v1.0
+        _flags = 0,
+        _method = 0,
+        _time = 0,
+        _crc = 0,
+        _compressedSize = 0,
+        _size = 0,
+        _fnameLen = 0,
+        _extraLen = 0,
+        _comLen = 0,
+        _diskStart = 0,
+        _inattr = 0,
+        _attr = 0,
+        _offset = 0;
+
+    _verMade |= Utils.isWin ? 0x0a00 : 0x0300;
+
+    // Set EFS flag since filename and comment fields are all by default encoded using UTF-8.
+    // Without it file names may be corrupted for other apps when file names use unicode chars
+    _flags |= Constants.FLG_EFS;
+
+    const _localHeader = {
+        extraLen: 0
+    };
+
+    // casting
+    const uint32 = (val) => Math.max(0, val) >>> 0;
+    const uint16 = (val) => Math.max(0, val) & 0xffff;
+    const uint8 = (val) => Math.max(0, val) & 0xff;
+
+    _time = Utils.fromDate2DOS(new Date());
+
+    return {
+        get made() {
+            return _verMade;
+        },
+        set made(val) {
+            _verMade = val;
+        },
+
+        get version() {
+            return _version;
+        },
+        set version(val) {
+            _version = val;
+        },
+
+        get flags() {
+            return _flags;
+        },
+        set flags(val) {
+            _flags = val;
+        },
+
+        get flags_efs() {
+            return (_flags & Constants.FLG_EFS) > 0;
+        },
+        set flags_efs(val) {
+            if (val) {
+                _flags |= Constants.FLG_EFS;
+            } else {
+                _flags &= ~Constants.FLG_EFS;
+            }
+        },
+
+        get flags_desc() {
+            return (_flags & Constants.FLG_DESC) > 0;
+        },
+        set flags_desc(val) {
+            if (val) {
+                _flags |= Constants.FLG_DESC;
+            } else {
+                _flags &= ~Constants.FLG_DESC;
+            }
+        },
+
+        get method() {
+            return _method;
+        },
+        set method(val) {
+            switch (val) {
+                case Constants.STORED:
+                    this.version = 10;
+                case Constants.DEFLATED:
+                default:
+                    this.version = 20;
+            }
+            _method = val;
+        },
+
+        get time() {
+            return Utils.fromDOS2Date(this.timeval);
+        },
+        set time(val) {
+            val = new Date(val);
+            this.timeval = Utils.fromDate2DOS(val);
+        },
+
+        get timeval() {
+            return _time;
+        },
+        set timeval(val) {
+            _time = uint32(val);
+        },
+
+        get timeHighByte() {
+            return uint8(_time >>> 8);
+        },
+        get crc() {
+            return _crc;
+        },
+        set crc(val) {
+            _crc = uint32(val);
+        },
+
+        get compressedSize() {
+            return _compressedSize;
+        },
+        set compressedSize(val) {
+            _compressedSize = uint32(val);
+        },
+
+        get size() {
+            return _size;
+        },
+        set size(val) {
+            _size = uint32(val);
+        },
+
+        get fileNameLength() {
+            return _fnameLen;
+        },
+        set fileNameLength(val) {
+            _fnameLen = val;
+        },
+
+        get extraLength() {
+            return _extraLen;
+        },
+        set extraLength(val) {
+            _extraLen = val;
+        },
+
+        get extraLocalLength() {
+            return _localHeader.extraLen;
+        },
+        set extraLocalLength(val) {
+            _localHeader.extraLen = val;
+        },
+
+        get commentLength() {
+            return _comLen;
+        },
+        set commentLength(val) {
+            _comLen = val;
+        },
+
+        get diskNumStart() {
+            return _diskStart;
+        },
+        set diskNumStart(val) {
+            _diskStart = uint32(val);
+        },
+
+        get inAttr() {
+            return _inattr;
+        },
+        set inAttr(val) {
+            _inattr = uint32(val);
+        },
+
+        get attr() {
+            return _attr;
+        },
+        set attr(val) {
+            _attr = uint32(val);
+        },
+
+        // get Unix file permissions
+        get fileAttr() {
+            return (_attr || 0) >> 16 & 0xfff;
+        },
+
+        get offset() {
+            return _offset;
+        },
+        set offset(val) {
+            _offset = uint32(val);
+        },
+
+        get encrypted() {
+            return (_flags & Constants.FLG_ENC) === Constants.FLG_ENC;
+        },
+
+        get centralHeaderSize() {
+            return Constants.CENHDR + _fnameLen + _extraLen + _comLen;
+        },
+
+        get realDataOffset() {
+            return _offset + Constants.LOCHDR + _localHeader.fnameLen + _localHeader.extraLen;
+        },
+
+        get localHeader() {
+            return _localHeader;
+        },
+
+        loadLocalHeaderFromBinary: function (/*Buffer*/ input) {
+            var data = input.slice(_offset, _offset + Constants.LOCHDR);
+            // 30 bytes and should start with "PK\003\004"
+            if (data.readUInt32LE(0) !== Constants.LOCSIG) {
+                throw Utils.Errors.INVALID_LOC();
+            }
+
+            // version needed to extract
+            _localHeader.version = data.readUInt16LE(Constants.LOCVER);
+            // general purpose bit flag
+            _localHeader.flags = data.readUInt16LE(Constants.LOCFLG);
+            // desc flag
+            _localHeader.flags_desc = (_localHeader.flags & Constants.FLG_DESC) > 0;
+            // compression method
+            _localHeader.method = data.readUInt16LE(Constants.LOCHOW);
+            // modification time (2 bytes time, 2 bytes date)
+            _localHeader.time = data.readUInt32LE(Constants.LOCTIM);
+            // uncompressed file crc-32 valu
+            _localHeader.crc = data.readUInt32LE(Constants.LOCCRC);
+            // compressed size
+            _localHeader.compressedSize = data.readUInt32LE(Constants.LOCSIZ);
+            // uncompressed size
+            _localHeader.size = data.readUInt32LE(Constants.LOCLEN);
+            // filename length
+            _localHeader.fnameLen = data.readUInt16LE(Constants.LOCNAM);
+            // extra field length
+            _localHeader.extraLen = data.readUInt16LE(Constants.LOCEXT);
+
+            // read extra data
+            const extraStart = _offset + Constants.LOCHDR + _localHeader.fnameLen;
+            const extraEnd = extraStart + _localHeader.extraLen;
+            return input.slice(extraStart, extraEnd);
+        },
+
+        loadFromBinary: function (/*Buffer*/ data) {
+            // data should be 46 bytes and start with "PK 01 02"
+            if (data.length !== Constants.CENHDR || data.readUInt32LE(0) !== Constants.CENSIG) {
+                throw Utils.Errors.INVALID_CEN();
+            }
+            // version made by
+            _verMade = data.readUInt16LE(Constants.CENVEM);
+            // version needed to extract
+            _version = data.readUInt16LE(Constants.CENVER);
+            // encrypt, decrypt flags
+            _flags = data.readUInt16LE(Constants.CENFLG);
+            // compression method
+            _method = data.readUInt16LE(Constants.CENHOW);
+            // modification time (2 bytes time, 2 bytes date)
+            _time = data.readUInt32LE(Constants.CENTIM);
+            // uncompressed file crc-32 value
+            _crc = data.readUInt32LE(Constants.CENCRC);
+            // compressed size
+            _compressedSize = data.readUInt32LE(Constants.CENSIZ);
+            // uncompressed size
+            _size = data.readUInt32LE(Constants.CENLEN);
+            // filename length
+            _fnameLen = data.readUInt16LE(Constants.CENNAM);
+            // extra field length
+            _extraLen = data.readUInt16LE(Constants.CENEXT);
+            // file comment length
+            _comLen = data.readUInt16LE(Constants.CENCOM);
+            // volume number start
+            _diskStart = data.readUInt16LE(Constants.CENDSK);
+            // internal file attributes
+            _inattr = data.readUInt16LE(Constants.CENATT);
+            // external file attributes
+            _attr = data.readUInt32LE(Constants.CENATX);
+            // LOC header offset
+            _offset = data.readUInt32LE(Constants.CENOFF);
+        },
+
+        localHeaderToBinary: function () {
+            // LOC header size (30 bytes)
+            var data = Buffer.alloc(Constants.LOCHDR);
+            // "PK\003\004"
+            data.writeUInt32LE(Constants.LOCSIG, 0);
+            // version needed to extract
+            data.writeUInt16LE(_version, Constants.LOCVER);
+            // general purpose bit flag
+            data.writeUInt16LE(_flags, Constants.LOCFLG);
+            // compression method
+            data.writeUInt16LE(_method, Constants.LOCHOW);
+            // modification time (2 bytes time, 2 bytes date)
+            data.writeUInt32LE(_time, Constants.LOCTIM);
+            // uncompressed file crc-32 value
+            data.writeUInt32LE(_crc, Constants.LOCCRC);
+            // compressed size
+            data.writeUInt32LE(_compressedSize, Constants.LOCSIZ);
+            // uncompressed size
+            data.writeUInt32LE(_size, Constants.LOCLEN);
+            // filename length
+            data.writeUInt16LE(_fnameLen, Constants.LOCNAM);
+            // extra field length
+            data.writeUInt16LE(_localHeader.extraLen, Constants.LOCEXT);
+            return data;
+        },
+
+        centralHeaderToBinary: function () {
+            // CEN header size (46 bytes)
+            var data = Buffer.alloc(Constants.CENHDR + _fnameLen + _extraLen + _comLen);
+            // "PK\001\002"
+            data.writeUInt32LE(Constants.CENSIG, 0);
+            // version made by
+            data.writeUInt16LE(_verMade, Constants.CENVEM);
+            // version needed to extract
+            data.writeUInt16LE(_version, Constants.CENVER);
+            // encrypt, decrypt flags
+            data.writeUInt16LE(_flags, Constants.CENFLG);
+            // compression method
+            data.writeUInt16LE(_method, Constants.CENHOW);
+            // modification time (2 bytes time, 2 bytes date)
+            data.writeUInt32LE(_time, Constants.CENTIM);
+            // uncompressed file crc-32 value
+            data.writeUInt32LE(_crc, Constants.CENCRC);
+            // compressed size
+            data.writeUInt32LE(_compressedSize, Constants.CENSIZ);
+            // uncompressed size
+            data.writeUInt32LE(_size, Constants.CENLEN);
+            // filename length
+            data.writeUInt16LE(_fnameLen, Constants.CENNAM);
+            // extra field length
+            data.writeUInt16LE(_extraLen, Constants.CENEXT);
+            // file comment length
+            data.writeUInt16LE(_comLen, Constants.CENCOM);
+            // volume number start
+            data.writeUInt16LE(_diskStart, Constants.CENDSK);
+            // internal file attributes
+            data.writeUInt16LE(_inattr, Constants.CENATT);
+            // external file attributes
+            data.writeUInt32LE(_attr, Constants.CENATX);
+            // LOC header offset
+            data.writeUInt32LE(_offset, Constants.CENOFF);
+            return data;
+        },
+
+        toJSON: function () {
+            const bytes = function (nr) {
+                return nr + " bytes";
+            };
+
+            return {
+                made: _verMade,
+                version: _version,
+                flags: _flags,
+                method: Utils.methodToString(_method),
+                time: this.time,
+                crc: "0x" + _crc.toString(16).toUpperCase(),
+                compressedSize: bytes(_compressedSize),
+                size: bytes(_size),
+                fileNameLength: bytes(_fnameLen),
+                extraLength: bytes(_extraLen),
+                commentLength: bytes(_comLen),
+                diskNumStart: _diskStart,
+                inAttr: _inattr,
+                attr: _attr,
+                offset: _offset,
+                centralHeaderSize: bytes(Constants.CENHDR + _fnameLen + _extraLen + _comLen)
+            };
+        },
+
+        toString: function () {
+            return JSON.stringify(this.toJSON(), null, "\t");
+        }
+    };
+};

backendia/node_modules/adm-zip/headers/index.js

@@ -0,0 +1,2 @@
+exports.EntryHeader = require("./entryHeader");
+exports.MainHeader = require("./mainHeader");

backendia/node_modules/adm-zip/headers/mainHeader.js

@@ -0,0 +1,130 @@
+var Utils = require("../util"),
+    Constants = Utils.Constants;
+
+/* The entries in the end of central directory */
+module.exports = function () {
+    var _volumeEntries = 0,
+        _totalEntries = 0,
+        _size = 0,
+        _offset = 0,
+        _commentLength = 0;
+
+    return {
+        get diskEntries() {
+            return _volumeEntries;
+        },
+        set diskEntries(/*Number*/ val) {
+            _volumeEntries = _totalEntries = val;
+        },
+
+        get totalEntries() {
+            return _totalEntries;
+        },
+        set totalEntries(/*Number*/ val) {
+            _totalEntries = _volumeEntries = val;
+        },
+
+        get size() {
+            return _size;
+        },
+        set size(/*Number*/ val) {
+            _size = val;
+        },
+
+        get offset() {
+            return _offset;
+        },
+        set offset(/*Number*/ val) {
+            _offset = val;
+        },
+
+        get commentLength() {
+            return _commentLength;
+        },
+        set commentLength(/*Number*/ val) {
+            _commentLength = val;
+        },
+
+        get mainHeaderSize() {
+            return Constants.ENDHDR + _commentLength;
+        },
+
+        loadFromBinary: function (/*Buffer*/ data) {
+            // data should be 22 bytes and start with "PK 05 06"
+            // or be 56+ bytes and start with "PK 06 06" for Zip64
+            if (
+                (data.length !== Constants.ENDHDR || data.readUInt32LE(0) !== Constants.ENDSIG) &&
+                (data.length < Constants.ZIP64HDR || data.readUInt32LE(0) !== Constants.ZIP64SIG)
+            ) {
+                throw Utils.Errors.INVALID_END();
+            }
+
+            if (data.readUInt32LE(0) === Constants.ENDSIG) {
+                // number of entries on this volume
+                _volumeEntries = data.readUInt16LE(Constants.ENDSUB);
+                // total number of entries
+                _totalEntries = data.readUInt16LE(Constants.ENDTOT);
+                // central directory size in bytes
+                _size = data.readUInt32LE(Constants.ENDSIZ);
+                // offset of first CEN header
+                _offset = data.readUInt32LE(Constants.ENDOFF);
+                // zip file comment length
+                _commentLength = data.readUInt16LE(Constants.ENDCOM);
+            } else {
+                // number of entries on this volume
+                _volumeEntries = Utils.readBigUInt64LE(data, Constants.ZIP64SUB);
+                // total number of entries
+                _totalEntries = Utils.readBigUInt64LE(data, Constants.ZIP64TOT);
+                // central directory size in bytes
+                _size = Utils.readBigUInt64LE(data, Constants.ZIP64SIZE);
+                // offset of first CEN header
+                _offset = Utils.readBigUInt64LE(data, Constants.ZIP64OFF);
+
+                _commentLength = 0;
+            }
+        },
+
+        toBinary: function () {
+            var b = Buffer.alloc(Constants.ENDHDR + _commentLength);
+            // "PK 05 06" signature
+            b.writeUInt32LE(Constants.ENDSIG, 0);
+            b.writeUInt32LE(0, 4);
+            // number of entries on this volume
+            b.writeUInt16LE(_volumeEntries, Constants.ENDSUB);
+            // total number of entries
+            b.writeUInt16LE(_totalEntries, Constants.ENDTOT);
+            // central directory size in bytes
+            b.writeUInt32LE(_size, Constants.ENDSIZ);
+            // offset of first CEN header
+            b.writeUInt32LE(_offset, Constants.ENDOFF);
+            // zip file comment length
+            b.writeUInt16LE(_commentLength, Constants.ENDCOM);
+            // fill comment memory with spaces so no garbage is left there
+            b.fill(" ", Constants.ENDHDR);
+
+            return b;
+        },
+
+        toJSON: function () {
+            // creates 0x0000 style output
+            const offset = function (nr, len) {
+                let offs = nr.toString(16).toUpperCase();
+                while (offs.length < len) offs = "0" + offs;
+                return "0x" + offs;
+            };
+
+            return {
+                diskEntries: _volumeEntries,
+                totalEntries: _totalEntries,
+                size: _size + " bytes",
+                offset: offset(_offset, 4),
+                commentLength: _commentLength
+            };
+        },
+
+        toString: function () {
+            return JSON.stringify(this.toJSON(), null, "\t");
+        }
+    };
+};
+// Misspelled

backendia/node_modules/adm-zip/methods/deflater.js

@@ -0,0 +1,33 @@
+module.exports = function (/*Buffer*/ inbuf) {
+    var zlib = require("zlib");
+
+    var opts = { chunkSize: (parseInt(inbuf.length / 1024) + 1) * 1024 };
+
+    return {
+        deflate: function () {
+            return zlib.deflateRawSync(inbuf, opts);
+        },
+
+        deflateAsync: function (/*Function*/ callback) {
+            var tmp = zlib.createDeflateRaw(opts),
+                parts = [],
+                total = 0;
+            tmp.on("data", function (data) {
+                parts.push(data);
+                total += data.length;
+            });
+            tmp.on("end", function () {
+                var buf = Buffer.alloc(total),
+                    written = 0;
+                buf.fill(0);
+                for (var i = 0; i < parts.length; i++) {
+                    var part = parts[i];
+                    part.copy(buf, written);
+                    written += part.length;
+                }
+                callback && callback(buf);
+            });
+            tmp.end(inbuf);
+        }
+    };
+};

backendia/node_modules/adm-zip/methods/index.js

@@ -0,0 +1,3 @@
+exports.Deflater = require("./deflater");
+exports.Inflater = require("./inflater");
+exports.ZipCrypto = require("./zipcrypto");

backendia/node_modules/adm-zip/methods/inflater.js

@@ -0,0 +1,34 @@
+const version = +(process.versions ? process.versions.node : "").split(".")[0] || 0;
+
+module.exports = function (/*Buffer*/ inbuf, /*number*/ expectedLength) {
+    var zlib = require("zlib");
+    const option = version >= 15 && expectedLength > 0 ? { maxOutputLength: expectedLength } : {};
+
+    return {
+        inflate: function () {
+            return zlib.inflateRawSync(inbuf, option);
+        },
+
+        inflateAsync: function (/*Function*/ callback) {
+            var tmp = zlib.createInflateRaw(option),
+                parts = [],
+                total = 0;
+            tmp.on("data", function (data) {
+                parts.push(data);
+                total += data.length;
+            });
+            tmp.on("end", function () {
+                var buf = Buffer.alloc(total),
+                    written = 0;
+                buf.fill(0);
+                for (var i = 0; i < parts.length; i++) {
+                    var part = parts[i];
+                    part.copy(buf, written);
+                    written += part.length;
+                }
+                callback && callback(buf);
+            });
+            tmp.end(inbuf);
+        }
+    };
+};

backendia/node_modules/adm-zip/methods/zipcrypto.js

@@ -0,0 +1,175 @@
+"use strict";
+
+// node crypt, we use it for generate salt
+// eslint-disable-next-line node/no-unsupported-features/node-builtins
+const { randomFillSync } = require("crypto");
+const Errors = require("../util/errors");
+
+// generate CRC32 lookup table
+const crctable = new Uint32Array(256).map((t, crc) => {
+    for (let j = 0; j < 8; j++) {
+        if (0 !== (crc & 1)) {
+            crc = (crc >>> 1) ^ 0xedb88320;
+        } else {
+            crc >>>= 1;
+        }
+    }
+    return crc >>> 0;
+});
+
+// C-style uInt32 Multiply (discards higher bits, when JS multiply discards lower bits)
+const uMul = (a, b) => Math.imul(a, b) >>> 0;
+
+// crc32 byte single update (actually same function is part of utils.crc32 function :) )
+const crc32update = (pCrc32, bval) => {
+    return crctable[(pCrc32 ^ bval) & 0xff] ^ (pCrc32 >>> 8);
+};
+
+// function for generating salt for encrytion header
+const genSalt = () => {
+    if ("function" === typeof randomFillSync) {
+        return randomFillSync(Buffer.alloc(12));
+    } else {
+        // fallback if function is not defined
+        return genSalt.node();
+    }
+};
+
+// salt generation with node random function (mainly as fallback)
+genSalt.node = () => {
+    const salt = Buffer.alloc(12);
+    const len = salt.length;
+    for (let i = 0; i < len; i++) salt[i] = (Math.random() * 256) & 0xff;
+    return salt;
+};
+
+// general config
+const config = {
+    genSalt
+};
+
+// Class Initkeys handles same basic ops with keys
+function Initkeys(pw) {
+    const pass = Buffer.isBuffer(pw) ? pw : Buffer.from(pw);
+    this.keys = new Uint32Array([0x12345678, 0x23456789, 0x34567890]);
+    for (let i = 0; i < pass.length; i++) {
+        this.updateKeys(pass[i]);
+    }
+}
+
+Initkeys.prototype.updateKeys = function (byteValue) {
+    const keys = this.keys;
+    keys[0] = crc32update(keys[0], byteValue);
+    keys[1] += keys[0] & 0xff;
+    keys[1] = uMul(keys[1], 134775813) + 1;
+    keys[2] = crc32update(keys[2], keys[1] >>> 24);
+    return byteValue;
+};
+
+Initkeys.prototype.next = function () {
+    const k = (this.keys[2] | 2) >>> 0; // key
+    return (uMul(k, k ^ 1) >> 8) & 0xff; // decode
+};
+
+function make_decrypter(/*Buffer*/ pwd) {
+    // 1. Stage initialize key
+    const keys = new Initkeys(pwd);
+
+    // return decrypter function
+    return function (/*Buffer*/ data) {
+        // result - we create new Buffer for results
+        const result = Buffer.alloc(data.length);
+        let pos = 0;
+        // process input data
+        for (let c of data) {
+            //c ^= keys.next();
+            //result[pos++] = c; // decode & Save Value
+            result[pos++] = keys.updateKeys(c ^ keys.next()); // update keys with decoded byte
+        }
+        return result;
+    };
+}
+
+function make_encrypter(/*Buffer*/ pwd) {
+    // 1. Stage initialize key
+    const keys = new Initkeys(pwd);
+
+    // return encrypting function, result and pos is here so we dont have to merge buffers later
+    return function (/*Buffer*/ data, /*Buffer*/ result, /* Number */ pos = 0) {
+        // result - we create new Buffer for results
+        if (!result) result = Buffer.alloc(data.length);
+        // process input data
+        for (let c of data) {
+            const k = keys.next(); // save key byte
+            result[pos++] = c ^ k; // save val
+            keys.updateKeys(c); // update keys with decoded byte
+        }
+        return result;
+    };
+}
+
+function decrypt(/*Buffer*/ data, /*Object*/ header, /*String, Buffer*/ pwd) {
+    if (!data || !Buffer.isBuffer(data) || data.length < 12) {
+        return Buffer.alloc(0);
+    }
+
+    // 1. We Initialize and generate decrypting function
+    const decrypter = make_decrypter(pwd);
+
+    // 2. decrypt salt what is always 12 bytes and is a part of file content
+    const salt = decrypter(data.slice(0, 12));
+
+    // if bit 3 (0x08) of the general-purpose flags field is set, check salt[11] with the high byte of the header time
+    // 2 byte data block (as per Info-Zip spec), otherwise check with the high byte of the header entry
+    const verifyByte = (header.flags & 0x8) === 0x8 ? header.timeHighByte : header.crc >>> 24;
+
+    //3. does password meet expectations
+    if (salt[11] !== verifyByte) {
+        throw Errors.WRONG_PASSWORD();
+    }
+
+    // 4. decode content
+    return decrypter(data.slice(12));
+}
+
+// lets add way to populate salt, NOT RECOMMENDED for production but maybe useful for testing general functionality
+function _salter(data) {
+    if (Buffer.isBuffer(data) && data.length >= 12) {
+        // be aware - currently salting buffer data is modified
+        config.genSalt = function () {
+            return data.slice(0, 12);
+        };
+    } else if (data === "node") {
+        // test salt generation with node random function
+        config.genSalt = genSalt.node;
+    } else {
+        // if value is not acceptable config gets reset.
+        config.genSalt = genSalt;
+    }
+}
+
+function encrypt(/*Buffer*/ data, /*Object*/ header, /*String, Buffer*/ pwd, /*Boolean*/ oldlike = false) {
+    // 1. test data if data is not Buffer we make buffer from it
+    if (data == null) data = Buffer.alloc(0);
+    // if data is not buffer be make buffer from it
+    if (!Buffer.isBuffer(data)) data = Buffer.from(data.toString());
+
+    // 2. We Initialize and generate encrypting function
+    const encrypter = make_encrypter(pwd);
+
+    // 3. generate salt (12-bytes of random data)
+    const salt = config.genSalt();
+    salt[11] = (header.crc >>> 24) & 0xff;
+
+    // old implementations (before PKZip 2.04g) used two byte check
+    if (oldlike) salt[10] = (header.crc >>> 16) & 0xff;
+
+    // 4. create output
+    const result = Buffer.alloc(data.length + 12);
+    encrypter(salt, result);
+
+    // finally encode content
+    return encrypter(data, result, 12);
+}
+
+module.exports = { decrypt, encrypt, _salter };

backendia/node_modules/adm-zip/package.json

@@ -0,0 +1,54 @@
+{
+  "name": "adm-zip",
+  "version": "0.5.17",
+  "description": "Javascript implementation of zip for nodejs with support for electron original-fs. Allows user to create or extract zip files both in memory or to/from disk",
+  "scripts": {
+    "test": "mocha -R spec",
+    "test:format": "npm run format:prettier:raw -- --check",
+    "format": "npm run format:prettier",
+    "format:prettier": "npm run format:prettier:raw -- --write",
+    "format:prettier:raw": "prettier \"**/*.{js,yml,json}\""
+  },
+  "keywords": [
+    "zip",
+    "methods",
+    "archive",
+    "unzip"
+  ],
+  "homepage": "https://github.com/cthackers/adm-zip",
+  "author": "Nasca Iacob <sy@another-d-mention.ro> (https://github.com/cthackers)",
+  "bugs": {
+    "email": "sy@another-d-mention.ro",
+    "url": "https://github.com/cthackers/adm-zip/issues"
+  },
+  "license": "MIT",
+  "files": [
+    "adm-zip.js",
+    "headers",
+    "methods",
+    "util",
+    "zipEntry.js",
+    "zipFile.js",
+    "LICENSE"
+  ],
+  "main": "adm-zip.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/cthackers/adm-zip.git"
+  },
+  "engines": {
+    "node": ">=12.0"
+  },
+  "overrides": {
+    "mocha": {
+      "chokidar": "^4.0.3"
+    }
+  },
+  "devDependencies": {
+    "chai": "^6.2.2",
+    "iconv-lite": "^0.7.2",
+    "mocha": "12.0.0-beta-10",
+    "prettier": "^3.8.1",
+    "rimraf": "^3.0.2"
+  }
+}

backendia/node_modules/adm-zip/util/constants.js

@@ -0,0 +1,142 @@
+module.exports = {
+    /* The local file header */
+    LOCHDR           : 30, // LOC header size
+    LOCSIG           : 0x04034b50, // "PK\003\004"
+    LOCVER           : 4,	// version needed to extract
+    LOCFLG           : 6, // general purpose bit flag
+    LOCHOW           : 8, // compression method
+    LOCTIM           : 10, // modification time (2 bytes time, 2 bytes date)
+    LOCCRC           : 14, // uncompressed file crc-32 value
+    LOCSIZ           : 18, // compressed size
+    LOCLEN           : 22, // uncompressed size
+    LOCNAM           : 26, // filename length
+    LOCEXT           : 28, // extra field length
+
+    /* The Data descriptor */
+    EXTSIG           : 0x08074b50, // "PK\007\008"
+    EXTHDR           : 16, // EXT header size
+    EXTCRC           : 4, // uncompressed file crc-32 value
+    EXTSIZ           : 8, // compressed size
+    EXTLEN           : 12, // uncompressed size
+
+    /* The central directory file header */
+    CENHDR           : 46, // CEN header size
+    CENSIG           : 0x02014b50, // "PK\001\002"
+    CENVEM           : 4, // version made by
+    CENVER           : 6, // version needed to extract
+    CENFLG           : 8, // encrypt, decrypt flags
+    CENHOW           : 10, // compression method
+    CENTIM           : 12, // modification time (2 bytes time, 2 bytes date)
+    CENCRC           : 16, // uncompressed file crc-32 value
+    CENSIZ           : 20, // compressed size
+    CENLEN           : 24, // uncompressed size
+    CENNAM           : 28, // filename length
+    CENEXT           : 30, // extra field length
+    CENCOM           : 32, // file comment length
+    CENDSK           : 34, // volume number start
+    CENATT           : 36, // internal file attributes
+    CENATX           : 38, // external file attributes (host system dependent)
+    CENOFF           : 42, // LOC header offset
+
+    /* The entries in the end of central directory */
+    ENDHDR           : 22, // END header size
+    ENDSIG           : 0x06054b50, // "PK\005\006"
+    ENDSUB           : 8, // number of entries on this disk
+    ENDTOT           : 10, // total number of entries
+    ENDSIZ           : 12, // central directory size in bytes
+    ENDOFF           : 16, // offset of first CEN header
+    ENDCOM           : 20, // zip file comment length
+
+    END64HDR         : 20, // zip64 END header size
+    END64SIG         : 0x07064b50, // zip64 Locator signature, "PK\006\007"
+    END64START       : 4, // number of the disk with the start of the zip64
+    END64OFF         : 8, // relative offset of the zip64 end of central directory
+    END64NUMDISKS    : 16, // total number of disks
+
+    ZIP64SIG         : 0x06064b50, // zip64 signature, "PK\006\006"
+    ZIP64HDR         : 56, // zip64 record minimum size
+    ZIP64LEAD        : 12, // leading bytes at the start of the record, not counted by the value stored in ZIP64SIZE
+    ZIP64SIZE        : 4, // zip64 size of the central directory record
+    ZIP64VEM         : 12, // zip64 version made by
+    ZIP64VER         : 14, // zip64 version needed to extract
+    ZIP64DSK         : 16, // zip64 number of this disk
+    ZIP64DSKDIR      : 20, // number of the disk with the start of the record directory
+    ZIP64SUB         : 24, // number of entries on this disk
+    ZIP64TOT         : 32, // total number of entries
+    ZIP64SIZB        : 40, // zip64 central directory size in bytes
+    ZIP64OFF         : 48, // offset of start of central directory with respect to the starting disk number
+    ZIP64EXTRA       : 56, // extensible data sector
+
+    /* Compression methods */
+    STORED           : 0, // no compression
+    SHRUNK           : 1, // shrunk
+    REDUCED1         : 2, // reduced with compression factor 1
+    REDUCED2         : 3, // reduced with compression factor 2
+    REDUCED3         : 4, // reduced with compression factor 3
+    REDUCED4         : 5, // reduced with compression factor 4
+    IMPLODED         : 6, // imploded
+    // 7 reserved for Tokenizing compression algorithm
+    DEFLATED         : 8, // deflated
+    ENHANCED_DEFLATED: 9, // enhanced deflated
+    PKWARE           : 10,// PKWare DCL imploded
+    // 11 reserved by PKWARE
+    BZIP2            : 12, //  compressed using BZIP2
+    // 13 reserved by PKWARE
+    LZMA             : 14, // LZMA
+    // 15-17 reserved by PKWARE
+    IBM_TERSE        : 18, // compressed using IBM TERSE
+    IBM_LZ77         : 19, // IBM LZ77 z
+    AES_ENCRYPT      : 99, // WinZIP AES encryption method
+
+    /* General purpose bit flag */
+    // values can obtained with expression 2**bitnr
+    FLG_ENC          : 1,    // Bit 0: encrypted file
+    FLG_COMP1        : 2,    // Bit 1, compression option
+    FLG_COMP2        : 4,    // Bit 2, compression option
+    FLG_DESC         : 8,    // Bit 3, data descriptor
+    FLG_ENH          : 16,   // Bit 4, enhanced deflating
+    FLG_PATCH        : 32,   // Bit 5, indicates that the file is compressed patched data.
+    FLG_STR          : 64,   // Bit 6, strong encryption (patented)
+                             // Bits 7-10: Currently unused.
+    FLG_EFS          : 2048, // Bit 11: Language encoding flag (EFS)
+                             // Bit 12: Reserved by PKWARE for enhanced compression.
+                             // Bit 13: encrypted the Central Directory (patented).
+                             // Bits 14-15: Reserved by PKWARE.
+    FLG_MSK          : 4096, // mask header values
+
+    /* Load type */
+    FILE             : 2,
+    BUFFER           : 1,
+    NONE             : 0,
+
+    /* 4.5 Extensible data fields */
+    EF_ID            : 0,
+    EF_SIZE          : 2,
+
+    /* Header IDs */
+    ID_ZIP64         : 0x0001,
+    ID_AVINFO        : 0x0007,
+    ID_PFS           : 0x0008,
+    ID_OS2           : 0x0009,
+    ID_NTFS          : 0x000a,
+    ID_OPENVMS       : 0x000c,
+    ID_UNIX          : 0x000d,
+    ID_FORK          : 0x000e,
+    ID_PATCH         : 0x000f,
+    ID_X509_PKCS7    : 0x0014,
+    ID_X509_CERTID_F : 0x0015,
+    ID_X509_CERTID_C : 0x0016,
+    ID_STRONGENC     : 0x0017,
+    ID_RECORD_MGT    : 0x0018,
+    ID_X509_PKCS7_RL : 0x0019,
+    ID_IBM1          : 0x0065,
+    ID_IBM2          : 0x0066,
+    ID_POSZIP        : 0x4690,
+
+    EF_ZIP64_OR_32   : 0xffffffff,
+    EF_ZIP64_OR_16   : 0xffff,
+    EF_ZIP64_SUNCOMP : 0,
+    EF_ZIP64_SCOMP   : 8,
+    EF_ZIP64_RHO     : 16,
+    EF_ZIP64_DSN     : 24
+};

backendia/node_modules/adm-zip/util/decoder.js

@@ -0,0 +1,5 @@
+module.exports = {
+    efs: true,
+    encode: (data) => Buffer.from(data, "utf8"),
+    decode: (data) => data.toString("utf8")
+};

backendia/node_modules/adm-zip/util/errors.js

@@ -0,0 +1,63 @@
+const errors = {
+    /* Header error messages */
+    INVALID_LOC: "Invalid LOC header (bad signature)",
+    INVALID_CEN: "Invalid CEN header (bad signature)",
+    INVALID_END: "Invalid END header (bad signature)",
+
+    /* Descriptor */
+    DESCRIPTOR_NOT_EXIST: "No descriptor present",
+    DESCRIPTOR_UNKNOWN: "Unknown descriptor format",
+    DESCRIPTOR_FAULTY: "Descriptor data is malformed",
+
+    /* ZipEntry error messages*/
+    NO_DATA: "Nothing to decompress",
+    BAD_CRC: "CRC32 checksum failed {0}",
+    FILE_IN_THE_WAY: "There is a file in the way: {0}",
+    UNKNOWN_METHOD: "Invalid/unsupported compression method",
+
+    /* Inflater error messages */
+    AVAIL_DATA: "inflate::Available inflate data did not terminate",
+    INVALID_DISTANCE: "inflate::Invalid literal/length or distance code in fixed or dynamic block",
+    TO_MANY_CODES: "inflate::Dynamic block code description: too many length or distance codes",
+    INVALID_REPEAT_LEN: "inflate::Dynamic block code description: repeat more than specified lengths",
+    INVALID_REPEAT_FIRST: "inflate::Dynamic block code description: repeat lengths with no first length",
+    INCOMPLETE_CODES: "inflate::Dynamic block code description: code lengths codes incomplete",
+    INVALID_DYN_DISTANCE: "inflate::Dynamic block code description: invalid distance code lengths",
+    INVALID_CODES_LEN: "inflate::Dynamic block code description: invalid literal/length code lengths",
+    INVALID_STORE_BLOCK: "inflate::Stored block length did not match one's complement",
+    INVALID_BLOCK_TYPE: "inflate::Invalid block type (type == 3)",
+
+    /* ADM-ZIP error messages */
+    CANT_EXTRACT_FILE: "Could not extract the file",
+    CANT_OVERRIDE: "Target file already exists",
+    DISK_ENTRY_TOO_LARGE: "Number of disk entries is too large",
+    NO_ZIP: "No zip file was loaded",
+    NO_ENTRY: "Entry doesn't exist",
+    DIRECTORY_CONTENT_ERROR: "A directory cannot have content",
+    FILE_NOT_FOUND: 'File not found: "{0}"',
+    NOT_IMPLEMENTED: "Not implemented",
+    INVALID_FILENAME: "Invalid filename",
+    INVALID_FORMAT: "Invalid or unsupported zip format. No END header found",
+    INVALID_PASS_PARAM: "Incompatible password parameter",
+    WRONG_PASSWORD: "Wrong Password",
+
+    /* ADM-ZIP */
+    COMMENT_TOO_LONG: "Comment is too long", // Comment can be max 65535 bytes long (NOTE: some non-US characters may take more space)
+    EXTRA_FIELD_PARSE_ERROR: "Extra field parsing error"
+};
+
+// template
+function E(message) {
+    return function (...args) {
+        if (args.length) { // Allow {0} .. {9} arguments in error message, based on argument number
+            message = message.replace(/\{(\d)\}/g, (_, n) => args[n] || '');
+        }
+
+        return new Error('ADM-ZIP: ' + message);
+    };
+}
+
+// Init errors with template
+for (const msg of Object.keys(errors)) {
+    exports[msg] = E(errors[msg]);
+}

backendia/node_modules/adm-zip/util/fattr.js

@@ -0,0 +1,76 @@
+const pth = require("path");
+
+module.exports = function (/*String*/ path, /*Utils object*/ { fs }) {
+    var _path = path || "",
+        _obj = newAttr(),
+        _stat = null;
+
+    function newAttr() {
+        return {
+            directory: false,
+            readonly: false,
+            hidden: false,
+            executable: false,
+            mtime: 0,
+            atime: 0
+        };
+    }
+
+    if (_path && fs.existsSync(_path)) {
+        _stat = fs.statSync(_path);
+        _obj.directory = _stat.isDirectory();
+        _obj.mtime = _stat.mtime;
+        _obj.atime = _stat.atime;
+        _obj.executable = (0o111 & _stat.mode) !== 0; // file is executable who ever har right not just owner
+        _obj.readonly = (0o200 & _stat.mode) === 0; // readonly if owner has no write right
+        _obj.hidden = pth.basename(_path)[0] === ".";
+    } else {
+        console.warn("Invalid path: " + _path);
+    }
+
+    return {
+        get directory() {
+            return _obj.directory;
+        },
+
+        get readOnly() {
+            return _obj.readonly;
+        },
+
+        get hidden() {
+            return _obj.hidden;
+        },
+
+        get mtime() {
+            return _obj.mtime;
+        },
+
+        get atime() {
+            return _obj.atime;
+        },
+
+        get executable() {
+            return _obj.executable;
+        },
+
+        decodeAttributes: function () {},
+
+        encodeAttributes: function () {},
+
+        toJSON: function () {
+            return {
+                path: _path,
+                isDirectory: _obj.directory,
+                isReadOnly: _obj.readonly,
+                isHidden: _obj.hidden,
+                isExecutable: _obj.executable,
+                mTime: _obj.mtime,
+                aTime: _obj.atime
+            };
+        },
+
+        toString: function () {
+            return JSON.stringify(this.toJSON(), null, "\t");
+        }
+    };
+};

backendia/node_modules/adm-zip/util/index.js

@@ -0,0 +1,5 @@
+module.exports = require("./utils");
+module.exports.Constants = require("./constants");
+module.exports.Errors = require("./errors");
+module.exports.FileAttr = require("./fattr");
+module.exports.decoder = require("./decoder");

backendia/node_modules/adm-zip/util/utils.js

@@ -0,0 +1,339 @@
+const fsystem = require("fs");
+const pth = require("path");
+const Constants = require("./constants");
+const Errors = require("./errors");
+const isWin = typeof process === "object" && "win32" === process.platform;
+
+const is_Obj = (obj) => typeof obj === "object" && obj !== null;
+
+// generate CRC32 lookup table
+const crcTable = new Uint32Array(256).map((t, c) => {
+    for (let k = 0; k < 8; k++) {
+        if ((c & 1) !== 0) {
+            c = 0xedb88320 ^ (c >>> 1);
+        } else {
+            c >>>= 1;
+        }
+    }
+    return c >>> 0;
+});
+
+// UTILS functions
+
+function Utils(opts) {
+    this.sep = pth.sep;
+    this.fs = fsystem;
+
+    if (is_Obj(opts)) {
+        // custom filesystem
+        if (is_Obj(opts.fs) && typeof opts.fs.statSync === "function") {
+            this.fs = opts.fs;
+        }
+    }
+}
+
+module.exports = Utils;
+
+// INSTANTIABLE functions
+
+Utils.prototype.makeDir = function (/*String*/ folder) {
+    const self = this;
+
+    // Sync - make directories tree
+    function mkdirSync(/*String*/ fpath) {
+        let resolvedPath = fpath.split(self.sep)[0];
+        fpath.split(self.sep).forEach(function (name) {
+            if (!name || name.substr(-1, 1) === ":") return;
+            resolvedPath += self.sep + name;
+            var stat;
+            try {
+                stat = self.fs.statSync(resolvedPath);
+            } catch (e) {
+                if (e.message && e.message.startsWith('ENOENT')) {
+                    self.fs.mkdirSync(resolvedPath);
+                } else {
+                    throw e;
+                }
+            }
+            if (stat && stat.isFile()) throw Errors.FILE_IN_THE_WAY(`"${resolvedPath}"`);
+        });
+    }
+
+    mkdirSync(folder);
+};
+
+Utils.prototype.writeFileTo = function (/*String*/ path, /*Buffer*/ content, /*Boolean*/ overwrite, /*Number*/ attr) {
+    const self = this;
+    if (self.fs.existsSync(path)) {
+        if (!overwrite) return false; // cannot overwrite
+
+        var stat = self.fs.statSync(path);
+        if (stat.isDirectory()) {
+            return false;
+        }
+    }
+    var folder = pth.dirname(path);
+    if (!self.fs.existsSync(folder)) {
+        self.makeDir(folder);
+    }
+
+    var fd;
+    try {
+        fd = self.fs.openSync(path, "w", 0o666); // 0666
+    } catch (e) {
+        self.fs.chmodSync(path, 0o666);
+        fd = self.fs.openSync(path, "w", 0o666);
+    }
+    if (fd) {
+        try {
+            self.fs.writeSync(fd, content, 0, content.length, 0);
+        } finally {
+            self.fs.closeSync(fd);
+        }
+    }
+    self.fs.chmodSync(path, attr || 0o666);
+    return true;
+};
+
+Utils.prototype.writeFileToAsync = function (/*String*/ path, /*Buffer*/ content, /*Boolean*/ overwrite, /*Number*/ attr, /*Function*/ callback) {
+    if (typeof attr === "function") {
+        callback = attr;
+        attr = undefined;
+    }
+
+    const self = this;
+
+    self.fs.exists(path, function (exist) {
+        if (exist && !overwrite) return callback(false);
+
+        self.fs.stat(path, function (err, stat) {
+            if (exist && stat.isDirectory()) {
+                return callback(false);
+            }
+
+            var folder = pth.dirname(path);
+            self.fs.exists(folder, function (exists) {
+                if (!exists) self.makeDir(folder);
+
+                self.fs.open(path, "w", 0o666, function (err, fd) {
+                    if (err) {
+                        self.fs.chmod(path, 0o666, function () {
+                            self.fs.open(path, "w", 0o666, function (err, fd) {
+                                self.fs.write(fd, content, 0, content.length, 0, function () {
+                                    self.fs.close(fd, function () {
+                                        self.fs.chmod(path, attr || 0o666, function () {
+                                            callback(true);
+                                        });
+                                    });
+                                });
+                            });
+                        });
+                    } else if (fd) {
+                        self.fs.write(fd, content, 0, content.length, 0, function () {
+                            self.fs.close(fd, function () {
+                                self.fs.chmod(path, attr || 0o666, function () {
+                                    callback(true);
+                                });
+                            });
+                        });
+                    } else {
+                        self.fs.chmod(path, attr || 0o666, function () {
+                            callback(true);
+                        });
+                    }
+                });
+            });
+        });
+    });
+};
+
+Utils.prototype.findFiles = function (/*String*/ path) {
+    const self = this;
+
+    function findSync(/*String*/ dir, /*RegExp*/ pattern, /*Boolean*/ recursive) {
+        if (typeof pattern === "boolean") {
+            recursive = pattern;
+            pattern = undefined;
+        }
+        let files = [];
+        self.fs.readdirSync(dir).forEach(function (file) {
+            const path = pth.join(dir, file);
+            const stat = self.fs.statSync(path);
+
+            if (!pattern || pattern.test(path)) {
+                files.push(pth.normalize(path) + (stat.isDirectory() ? self.sep : ""));
+            }
+
+            if (stat.isDirectory() && recursive) files = files.concat(findSync(path, pattern, recursive));
+        });
+        return files;
+    }
+
+    return findSync(path, undefined, true);
+};
+
+/**
+ * Callback for showing if everything was done.
+ *
+ * @callback filelistCallback
+ * @param {Error} err - Error object
+ * @param {string[]} list - was request fully completed
+ */
+
+/**
+ *
+ * @param {string} dir
+ * @param {filelistCallback} cb
+ */
+Utils.prototype.findFilesAsync = function (dir, cb) {
+    const self = this;
+    let results = [];
+    self.fs.readdir(dir, function (err, list) {
+        if (err) return cb(err);
+        let list_length = list.length;
+        if (!list_length) return cb(null, results);
+        list.forEach(function (file) {
+            file = pth.join(dir, file);
+            self.fs.stat(file, function (err, stat) {
+                if (err) return cb(err);
+                if (stat) {
+                    results.push(pth.normalize(file) + (stat.isDirectory() ? self.sep : ""));
+                    if (stat.isDirectory()) {
+                        self.findFilesAsync(file, function (err, res) {
+                            if (err) return cb(err);
+                            results = results.concat(res);
+                            if (!--list_length) cb(null, results);
+                        });
+                    } else {
+                        if (!--list_length) cb(null, results);
+                    }
+                }
+            });
+        });
+    });
+};
+
+Utils.prototype.getAttributes = function () {};
+
+Utils.prototype.setAttributes = function () {};
+
+// STATIC functions
+
+// crc32 single update (it is part of crc32)
+Utils.crc32update = function (crc, byte) {
+    return crcTable[(crc ^ byte) & 0xff] ^ (crc >>> 8);
+};
+
+Utils.crc32 = function (buf) {
+    if (typeof buf === "string") {
+        buf = Buffer.from(buf, "utf8");
+    }
+
+    let len = buf.length;
+    let crc = ~0;
+    for (let off = 0; off < len; ) crc = Utils.crc32update(crc, buf[off++]);
+    // xor and cast as uint32 number
+    return ~crc >>> 0;
+};
+
+Utils.methodToString = function (/*Number*/ method) {
+    switch (method) {
+        case Constants.STORED:
+            return "STORED (" + method + ")";
+        case Constants.DEFLATED:
+            return "DEFLATED (" + method + ")";
+        default:
+            return "UNSUPPORTED (" + method + ")";
+    }
+};
+
+/**
+ * removes ".." style path elements
+ * @param {string} path - fixable path
+ * @returns string - fixed filepath
+ */
+Utils.canonical = function (/*string*/ path) {
+    if (!path) return "";
+    // trick normalize think path is absolute
+    const safeSuffix = pth.posix.normalize("/" + path.split("\\").join("/"));
+    return pth.join(".", safeSuffix);
+};
+
+/**
+ * fix file names in achive
+ * @param {string} path - fixable path
+ * @returns string - fixed filepath
+ */
+
+Utils.zipnamefix = function (path) {
+    if (!path) return "";
+    // trick normalize think path is absolute
+    const safeSuffix = pth.posix.normalize("/" + path.split("\\").join("/"));
+    return pth.posix.join(".", safeSuffix);
+};
+
+/**
+ *
+ * @param {Array} arr
+ * @param {function} callback
+ * @returns
+ */
+Utils.findLast = function (arr, callback) {
+    if (!Array.isArray(arr)) throw new TypeError("arr is not array");
+
+    const len = arr.length >>> 0;
+    for (let i = len - 1; i >= 0; i--) {
+        if (callback(arr[i], i, arr)) {
+            return arr[i];
+        }
+    }
+    return void 0;
+};
+
+// make abolute paths taking prefix as root folder
+Utils.sanitize = function (/*string*/ prefix, /*string*/ name) {
+    prefix = pth.resolve(pth.normalize(prefix));
+    var parts = name.split("/");
+    for (var i = 0, l = parts.length; i < l; i++) {
+        var path = pth.normalize(pth.join(prefix, parts.slice(i, l).join(pth.sep)));
+        if (path.indexOf(prefix) === 0) {
+            return path;
+        }
+    }
+    return pth.normalize(pth.join(prefix, pth.basename(name)));
+};
+
+// converts buffer, Uint8Array, string types to buffer
+Utils.toBuffer = function toBuffer(/*buffer, Uint8Array, string*/ input, /* function */ encoder) {
+    if (Buffer.isBuffer(input)) {
+        return input;
+    } else if (input instanceof Uint8Array) {
+        return Buffer.from(input);
+    } else {
+        // expect string all other values are invalid and return empty buffer
+        return typeof input === "string" ? encoder(input) : Buffer.alloc(0);
+    }
+};
+
+Utils.readBigUInt64LE = function (/*Buffer*/ buffer, /*int*/ index) {
+    const lo = buffer.readUInt32LE(index);
+    const hi = buffer.readUInt32LE(index + 4);
+    return hi * 0x100000000 + lo;
+};
+
+Utils.fromDOS2Date = function (val) {
+    return new Date(((val >> 25) & 0x7f) + 1980, Math.max(((val >> 21) & 0x0f) - 1, 0), Math.max((val >> 16) & 0x1f, 1), (val >> 11) & 0x1f, (val >> 5) & 0x3f, (val & 0x1f) << 1);
+};
+
+Utils.fromDate2DOS = function (val) {
+    let date = 0;
+    let time = 0;
+    if (val.getFullYear() > 1979) {
+        date = (((val.getFullYear() - 1980) & 0x7f) << 9) | ((val.getMonth() + 1) << 5) | val.getDate();
+        time = (val.getHours() << 11) | (val.getMinutes() << 5) | (val.getSeconds() >> 1);
+    }
+    return (date << 16) | time;
+};
+
+Utils.isWin = isWin; // Do we have windows system
+Utils.crcTable = crcTable;

backendia/node_modules/adm-zip/zipEntry.js

@@ -0,0 +1,405 @@
+var Utils = require("./util"),
+    Headers = require("./headers"),
+    Constants = Utils.Constants,
+    Methods = require("./methods");
+
+module.exports = function (/** object */ options, /*Buffer*/ input) {
+    var _centralHeader = new Headers.EntryHeader(),
+        _entryName = Buffer.alloc(0),
+        _comment = Buffer.alloc(0),
+        _isDirectory = false,
+        uncompressedData = null,
+        _extra = Buffer.alloc(0),
+        _extralocal = Buffer.alloc(0),
+        _efs = true;
+
+    // assign options
+    const opts = options;
+
+    const decoder = typeof opts.decoder === "object" ? opts.decoder : Utils.decoder;
+    _efs = decoder.hasOwnProperty("efs") ? decoder.efs : false;
+
+    function getCompressedDataFromZip() {
+        //if (!input || !Buffer.isBuffer(input)) {
+        if (!input || !(input instanceof Uint8Array)) {
+            return Buffer.alloc(0);
+        }
+        _extralocal = _centralHeader.loadLocalHeaderFromBinary(input);
+        return input.slice(_centralHeader.realDataOffset, _centralHeader.realDataOffset + _centralHeader.compressedSize);
+    }
+
+    function crc32OK(data) {
+        // if bit 3 (0x08) of the general-purpose flags field is set, then the CRC-32 and file sizes are not known when the local header is written
+        if (!_centralHeader.flags_desc && !_centralHeader.localHeader.flags_desc) {
+            if (Utils.crc32(data) !== _centralHeader.localHeader.crc) {
+                return false;
+            }
+        } else {
+            const descriptor = {};
+            const dataEndOffset = _centralHeader.realDataOffset + _centralHeader.compressedSize;
+            // no descriptor after compressed data, instead new local header
+            if (input.readUInt32LE(dataEndOffset) == Constants.LOCSIG || input.readUInt32LE(dataEndOffset) == Constants.CENSIG) {
+                throw Utils.Errors.DESCRIPTOR_NOT_EXIST();
+            }
+
+            // get decriptor data
+            if (input.readUInt32LE(dataEndOffset) == Constants.EXTSIG) {
+                // descriptor with signature
+                descriptor.crc = input.readUInt32LE(dataEndOffset + Constants.EXTCRC);
+                descriptor.compressedSize = input.readUInt32LE(dataEndOffset + Constants.EXTSIZ);
+                descriptor.size = input.readUInt32LE(dataEndOffset + Constants.EXTLEN);
+            } else if (input.readUInt16LE(dataEndOffset + 12) === 0x4b50) {
+                // descriptor without signature (we check is new header starting where we expect)
+                descriptor.crc = input.readUInt32LE(dataEndOffset + Constants.EXTCRC - 4);
+                descriptor.compressedSize = input.readUInt32LE(dataEndOffset + Constants.EXTSIZ - 4);
+                descriptor.size = input.readUInt32LE(dataEndOffset + Constants.EXTLEN - 4);
+            } else {
+                throw Utils.Errors.DESCRIPTOR_UNKNOWN();
+            }
+
+            // check data integrity
+            if (descriptor.compressedSize !== _centralHeader.compressedSize || descriptor.size !== _centralHeader.size || descriptor.crc !== _centralHeader.crc) {
+                throw Utils.Errors.DESCRIPTOR_FAULTY();
+            }
+            if (Utils.crc32(data) !== descriptor.crc) {
+                return false;
+            }
+
+            // @TODO: zip64 bit descriptor fields
+            // if bit 3 is set and any value in local header "zip64 Extended information" extra field are set 0 (place holder)
+            // then 64-bit descriptor format is used instead of 32-bit
+            // central header - "zip64 Extended information" extra field should store real values and not place holders
+        }
+        return true;
+    }
+
+    function decompress(/*Boolean*/ async, /*Function*/ callback, /*String, Buffer*/ pass) {
+        if (typeof callback === "undefined" && typeof async === "string") {
+            pass = async;
+            async = void 0;
+        }
+        if (_isDirectory) {
+            if (async && callback) {
+                callback(Buffer.alloc(0), Utils.Errors.DIRECTORY_CONTENT_ERROR()); //si added error.
+            }
+            return Buffer.alloc(0);
+        }
+
+        var compressedData = getCompressedDataFromZip();
+
+        if (compressedData.length === 0) {
+            // File is empty, nothing to decompress.
+            if (async && callback) callback(compressedData);
+            return compressedData;
+        }
+
+        if (_centralHeader.encrypted) {
+            if ("string" !== typeof pass && !Buffer.isBuffer(pass)) {
+                throw Utils.Errors.INVALID_PASS_PARAM();
+            }
+            compressedData = Methods.ZipCrypto.decrypt(compressedData, _centralHeader, pass);
+        }
+
+        var data = Buffer.alloc(_centralHeader.size);
+
+        switch (_centralHeader.method) {
+            case Utils.Constants.STORED:
+                compressedData.copy(data);
+                if (!crc32OK(data)) {
+                    if (async && callback) callback(data, Utils.Errors.BAD_CRC()); //si added error
+                    throw Utils.Errors.BAD_CRC();
+                } else {
+                    //si added otherwise did not seem to return data.
+                    if (async && callback) callback(data);
+                    return data;
+                }
+            case Utils.Constants.DEFLATED:
+                var inflater = new Methods.Inflater(compressedData, _centralHeader.size);
+                if (!async) {
+                    const result = inflater.inflate(data);
+                    result.copy(data, 0);
+                    if (!crc32OK(data)) {
+                        throw Utils.Errors.BAD_CRC(`"${decoder.decode(_entryName)}"`);
+                    }
+                    return data;
+                } else {
+                    inflater.inflateAsync(function (result) {
+                        result.copy(result, 0);
+                        if (callback) {
+                            if (!crc32OK(result)) {
+                                callback(result, Utils.Errors.BAD_CRC()); //si added error
+                            } else {
+                                callback(result);
+                            }
+                        }
+                    });
+                }
+                break;
+            default:
+                if (async && callback) callback(Buffer.alloc(0), Utils.Errors.UNKNOWN_METHOD());
+                throw Utils.Errors.UNKNOWN_METHOD();
+        }
+    }
+
+    function compress(/*Boolean*/ async, /*Function*/ callback) {
+        if ((!uncompressedData || !uncompressedData.length) && Buffer.isBuffer(input)) {
+            // no data set or the data wasn't changed to require recompression
+            if (async && callback) callback(getCompressedDataFromZip());
+            return getCompressedDataFromZip();
+        }
+
+        if (uncompressedData.length && !_isDirectory) {
+            var compressedData;
+            // Local file header
+            switch (_centralHeader.method) {
+                case Utils.Constants.STORED:
+                    _centralHeader.compressedSize = _centralHeader.size;
+
+                    compressedData = Buffer.alloc(uncompressedData.length);
+                    uncompressedData.copy(compressedData);
+
+                    if (async && callback) callback(compressedData);
+                    return compressedData;
+                default:
+                case Utils.Constants.DEFLATED:
+                    var deflater = new Methods.Deflater(uncompressedData);
+                    if (!async) {
+                        var deflated = deflater.deflate();
+                        _centralHeader.compressedSize = deflated.length;
+                        return deflated;
+                    } else {
+                        deflater.deflateAsync(function (data) {
+                            compressedData = Buffer.alloc(data.length);
+                            _centralHeader.compressedSize = data.length;
+                            data.copy(compressedData);
+                            callback && callback(compressedData);
+                        });
+                    }
+                    deflater = null;
+                    break;
+            }
+        } else if (async && callback) {
+            callback(Buffer.alloc(0));
+        } else {
+            return Buffer.alloc(0);
+        }
+    }
+
+    function readUInt64LE(buffer, offset) {
+        return Utils.readBigUInt64LE(buffer, offset);
+    }
+
+    function parseExtra(data) {
+        try {
+            var offset = 0;
+            var signature, size, part;
+            while (offset + 4 < data.length) {
+                signature = data.readUInt16LE(offset);
+                offset += 2;
+                size = data.readUInt16LE(offset);
+                offset += 2;
+                part = data.slice(offset, offset + size);
+                offset += size;
+                if (Constants.ID_ZIP64 === signature) {
+                    parseZip64ExtendedInformation(part);
+                }
+            }
+        } catch (error) {
+            throw Utils.Errors.EXTRA_FIELD_PARSE_ERROR();
+        }
+    }
+
+    //Override header field values with values from the ZIP64 extra field
+    function parseZip64ExtendedInformation(data) {
+        var size, compressedSize, offset, diskNumStart;
+
+        if (data.length >= Constants.EF_ZIP64_SCOMP) {
+            size = readUInt64LE(data, Constants.EF_ZIP64_SUNCOMP);
+            if (_centralHeader.size === Constants.EF_ZIP64_OR_32) {
+                _centralHeader.size = size;
+            }
+        }
+        if (data.length >= Constants.EF_ZIP64_RHO) {
+            compressedSize = readUInt64LE(data, Constants.EF_ZIP64_SCOMP);
+            if (_centralHeader.compressedSize === Constants.EF_ZIP64_OR_32) {
+                _centralHeader.compressedSize = compressedSize;
+            }
+        }
+        if (data.length >= Constants.EF_ZIP64_DSN) {
+            offset = readUInt64LE(data, Constants.EF_ZIP64_RHO);
+            if (_centralHeader.offset === Constants.EF_ZIP64_OR_32) {
+                _centralHeader.offset = offset;
+            }
+        }
+        if (data.length >= Constants.EF_ZIP64_DSN + 4) {
+            diskNumStart = data.readUInt32LE(Constants.EF_ZIP64_DSN);
+            if (_centralHeader.diskNumStart === Constants.EF_ZIP64_OR_16) {
+                _centralHeader.diskNumStart = diskNumStart;
+            }
+        }
+    }
+
+    return {
+        get entryName() {
+            return decoder.decode(_entryName);
+        },
+        get rawEntryName() {
+            return _entryName;
+        },
+        set entryName(val) {
+            _entryName = Utils.toBuffer(val, decoder.encode);
+            var lastChar = _entryName[_entryName.length - 1];
+            _isDirectory = lastChar === 47 || lastChar === 92;
+            _centralHeader.fileNameLength = _entryName.length;
+        },
+
+        get efs() {
+            if (typeof _efs === "function") {
+                return _efs(this.entryName);
+            } else {
+                return _efs;
+            }
+        },
+
+        get extra() {
+            return _extra;
+        },
+        set extra(val) {
+            _extra = val;
+            _centralHeader.extraLength = val.length;
+            parseExtra(val);
+        },
+
+        get comment() {
+            return decoder.decode(_comment);
+        },
+        set comment(val) {
+            _comment = Utils.toBuffer(val, decoder.encode);
+            _centralHeader.commentLength = _comment.length;
+            if (_comment.length > 0xffff) throw Utils.Errors.COMMENT_TOO_LONG();
+        },
+
+        get name() {
+            var n = decoder.decode(_entryName);
+            return _isDirectory
+                ? n
+                      .substr(n.length - 1)
+                      .split("/")
+                      .pop()
+                : n.split("/").pop();
+        },
+        get isDirectory() {
+            return _isDirectory;
+        },
+
+        getCompressedData: function () {
+            return compress(false, null);
+        },
+
+        getCompressedDataAsync: function (/*Function*/ callback) {
+            compress(true, callback);
+        },
+
+        setData: function (value) {
+            uncompressedData = Utils.toBuffer(value, Utils.decoder.encode);
+            if (!_isDirectory && uncompressedData.length) {
+                _centralHeader.size = uncompressedData.length;
+                _centralHeader.method = Utils.Constants.DEFLATED;
+                _centralHeader.crc = Utils.crc32(value);
+                _centralHeader.changed = true;
+            } else {
+                // folders and blank files should be stored
+                _centralHeader.method = Utils.Constants.STORED;
+            }
+        },
+
+        getData: function (pass) {
+            if (_centralHeader.changed) {
+                return uncompressedData;
+            } else {
+                return decompress(false, null, pass);
+            }
+        },
+
+        getDataAsync: function (/*Function*/ callback, pass) {
+            if (_centralHeader.changed) {
+                callback(uncompressedData);
+            } else {
+                decompress(true, callback, pass);
+            }
+        },
+
+        set attr(attr) {
+            _centralHeader.attr = attr;
+        },
+        get attr() {
+            return _centralHeader.attr;
+        },
+
+        set header(/*Buffer*/ data) {
+            _centralHeader.loadFromBinary(data);
+        },
+
+        get header() {
+            return _centralHeader;
+        },
+
+        packCentralHeader: function () {
+            _centralHeader.flags_efs = this.efs;
+            _centralHeader.extraLength = _extra.length;
+            // 1. create header (buffer)
+            var header = _centralHeader.centralHeaderToBinary();
+            var addpos = Utils.Constants.CENHDR;
+            // 2. add file name
+            _entryName.copy(header, addpos);
+            addpos += _entryName.length;
+            // 3. add extra data
+            _extra.copy(header, addpos);
+            addpos += _centralHeader.extraLength;
+            // 4. add file comment
+            _comment.copy(header, addpos);
+            return header;
+        },
+
+        packLocalHeader: function () {
+            let addpos = 0;
+            _centralHeader.flags_efs = this.efs;
+            _centralHeader.extraLocalLength = _extralocal.length;
+            // 1. construct local header Buffer
+            const localHeaderBuf = _centralHeader.localHeaderToBinary();
+            // 2. localHeader - crate header buffer
+            const localHeader = Buffer.alloc(localHeaderBuf.length + _entryName.length + _centralHeader.extraLocalLength);
+            // 2.1 add localheader
+            localHeaderBuf.copy(localHeader, addpos);
+            addpos += localHeaderBuf.length;
+            // 2.2 add file name
+            _entryName.copy(localHeader, addpos);
+            addpos += _entryName.length;
+            // 2.3 add extra field
+            _extralocal.copy(localHeader, addpos);
+            addpos += _extralocal.length;
+
+            return localHeader;
+        },
+
+        toJSON: function () {
+            const bytes = function (nr) {
+                return "<" + ((nr && nr.length + " bytes buffer") || "null") + ">";
+            };
+
+            return {
+                entryName: this.entryName,
+                name: this.name,
+                comment: this.comment,
+                isDirectory: this.isDirectory,
+                header: _centralHeader.toJSON(),
+                compressedData: bytes(input),
+                data: bytes(uncompressedData)
+            };
+        },
+
+        toString: function () {
+            return JSON.stringify(this.toJSON(), null, "\t");
+        }
+    };
+};

backendia/node_modules/adm-zip/zipFile.js

@@ -0,0 +1,446 @@
+const ZipEntry = require("./zipEntry");
+const Headers = require("./headers");
+const Utils = require("./util");
+
+module.exports = function (/*Buffer|null*/ inBuffer, /** object */ options) {
+    var entryList = [],
+        entryTable = {},
+        _comment = Buffer.alloc(0),
+        mainHeader = new Headers.MainHeader(),
+        loadedEntries = false;
+    var password = null;
+    const temporary = new Set();
+
+    // assign options
+    const opts = options;
+
+    const { noSort, decoder } = opts;
+
+    if (inBuffer) {
+        // is a memory buffer
+        readMainHeader(opts.readEntries);
+    } else {
+        // none. is a new file
+        loadedEntries = true;
+    }
+
+    function makeTemporaryFolders() {
+        const foldersList = new Set();
+
+        // Make list of all folders in file
+        for (const elem of Object.keys(entryTable)) {
+            const elements = elem.split("/");
+            elements.pop(); // filename
+            if (!elements.length) continue; // no folders
+            for (let i = 0; i < elements.length; i++) {
+                const sub = elements.slice(0, i + 1).join("/") + "/";
+                foldersList.add(sub);
+            }
+        }
+
+        // create missing folders as temporary
+        for (const elem of foldersList) {
+            if (!(elem in entryTable)) {
+                const tempfolder = new ZipEntry(opts);
+                tempfolder.entryName = elem;
+                tempfolder.attr = 0x10;
+                tempfolder.temporary = true;
+                entryList.push(tempfolder);
+                entryTable[tempfolder.entryName] = tempfolder;
+                temporary.add(tempfolder);
+            }
+        }
+    }
+
+    function readEntries() {
+        loadedEntries = true;
+        entryTable = {};
+        if (mainHeader.diskEntries > (inBuffer.length - mainHeader.offset) / Utils.Constants.CENHDR) {
+            throw Utils.Errors.DISK_ENTRY_TOO_LARGE();
+        }
+        entryList = new Array(mainHeader.diskEntries); // total number of entries
+        var index = mainHeader.offset; // offset of first CEN header
+        for (var i = 0; i < entryList.length; i++) {
+            var tmp = index,
+                entry = new ZipEntry(opts, inBuffer);
+            entry.header = inBuffer.slice(tmp, (tmp += Utils.Constants.CENHDR));
+
+            entry.entryName = inBuffer.slice(tmp, (tmp += entry.header.fileNameLength));
+
+            if (entry.header.extraLength) {
+                entry.extra = inBuffer.slice(tmp, (tmp += entry.header.extraLength));
+            }
+
+            if (entry.header.commentLength) entry.comment = inBuffer.slice(tmp, tmp + entry.header.commentLength);
+
+            index += entry.header.centralHeaderSize;
+
+            entryList[i] = entry;
+            entryTable[entry.entryName] = entry;
+        }
+        temporary.clear();
+        makeTemporaryFolders();
+    }
+
+    function readMainHeader(/*Boolean*/ readNow) {
+        var i = inBuffer.length - Utils.Constants.ENDHDR, // END header size
+            max = Math.max(0, i - 0xffff), // 0xFFFF is the max zip file comment length
+            n = max,
+            endStart = inBuffer.length,
+            endOffset = -1, // Start offset of the END header
+            commentEnd = 0;
+
+        // option to search header form entire file
+        const trailingSpace = typeof opts.trailingSpace === "boolean" ? opts.trailingSpace : false;
+        if (trailingSpace) max = 0;
+
+        for (i; i >= n; i--) {
+            if (inBuffer[i] !== 0x50) continue; // quick check that the byte is 'P'
+            if (inBuffer.readUInt32LE(i) === Utils.Constants.ENDSIG) {
+                // "PK\005\006"
+                endOffset = i;
+                commentEnd = i;
+                endStart = i + Utils.Constants.ENDHDR;
+                // We already found a regular signature, let's look just a bit further to check if there's any zip64 signature
+                n = i - Utils.Constants.END64HDR;
+                continue;
+            }
+
+            if (inBuffer.readUInt32LE(i) === Utils.Constants.END64SIG) {
+                // Found a zip64 signature, let's continue reading the whole zip64 record
+                n = max;
+                continue;
+            }
+
+            if (inBuffer.readUInt32LE(i) === Utils.Constants.ZIP64SIG) {
+                // Found the zip64 record, let's determine it's size
+                endOffset = i;
+                endStart = i + Utils.readBigUInt64LE(inBuffer, i + Utils.Constants.ZIP64SIZE) + Utils.Constants.ZIP64LEAD;
+                break;
+            }
+        }
+
+        if (endOffset == -1) throw Utils.Errors.INVALID_FORMAT();
+
+        mainHeader.loadFromBinary(inBuffer.slice(endOffset, endStart));
+        if (mainHeader.commentLength) {
+            _comment = inBuffer.slice(commentEnd + Utils.Constants.ENDHDR);
+        }
+        if (readNow) readEntries();
+    }
+
+    function sortEntries() {
+        if (entryList.length > 1 && !noSort) {
+            entryList.sort((a, b) => a.entryName.toLowerCase().localeCompare(b.entryName.toLowerCase()));
+        }
+    }
+
+    return {
+        /**
+         * Returns an array of ZipEntry objects existent in the current opened archive
+         * @return Array
+         */
+        get entries() {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            return entryList.filter((e) => !temporary.has(e));
+        },
+
+        /**
+         * Archive comment
+         * @return {String}
+         */
+        get comment() {
+            return decoder.decode(_comment);
+        },
+        set comment(val) {
+            _comment = Utils.toBuffer(val, decoder.encode);
+            mainHeader.commentLength = _comment.length;
+        },
+
+        getEntryCount: function () {
+            if (!loadedEntries) {
+                return mainHeader.diskEntries;
+            }
+
+            return entryList.length;
+        },
+
+        forEach: function (callback) {
+            this.entries.forEach(callback);
+        },
+
+        /**
+         * Returns a reference to the entry with the given name or null if entry is inexistent
+         *
+         * @param entryName
+         * @return ZipEntry
+         */
+        getEntry: function (/*String*/ entryName) {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            return entryTable[entryName] || null;
+        },
+
+        /**
+         * Adds the given entry to the entry list
+         *
+         * @param entry
+         */
+        setEntry: function (/*ZipEntry*/ entry) {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            entryList.push(entry);
+            entryTable[entry.entryName] = entry;
+            mainHeader.totalEntries = entryList.length;
+        },
+
+        /**
+         * Removes the file with the given name from the entry list.
+         *
+         * If the entry is a directory, then all nested files and directories will be removed
+         * @param entryName
+         * @returns {void}
+         */
+        deleteFile: function (/*String*/ entryName, withsubfolders = true) {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            const entry = entryTable[entryName];
+            const list = this.getEntryChildren(entry, withsubfolders).map((child) => child.entryName);
+
+            list.forEach(this.deleteEntry);
+        },
+
+        /**
+         * Removes the entry with the given name from the entry list.
+         *
+         * @param {string} entryName
+         * @returns {void}
+         */
+        deleteEntry: function (/*String*/ entryName) {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            const entry = entryTable[entryName];
+            const index = entryList.indexOf(entry);
+            if (index >= 0) {
+                entryList.splice(index, 1);
+                delete entryTable[entryName];
+                mainHeader.totalEntries = entryList.length;
+            }
+        },
+
+        /**
+         *  Iterates and returns all nested files and directories of the given entry
+         *
+         * @param entry
+         * @return Array
+         */
+        getEntryChildren: function (/*ZipEntry*/ entry, subfolders = true) {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            if (typeof entry === "object") {
+                if (entry.isDirectory && subfolders) {
+                    const list = [];
+                    const name = entry.entryName;
+
+                    for (const zipEntry of entryList) {
+                        if (zipEntry.entryName.startsWith(name)) {
+                            list.push(zipEntry);
+                        }
+                    }
+                    return list;
+                } else {
+                    return [entry];
+                }
+            }
+            return [];
+        },
+
+        /**
+         *  How many child elements entry has
+         *
+         * @param {ZipEntry} entry
+         * @return {integer}
+         */
+        getChildCount: function (entry) {
+            if (entry && entry.isDirectory) {
+                const list = this.getEntryChildren(entry);
+                return list.includes(entry) ? list.length - 1 : list.length;
+            }
+            return 0;
+        },
+
+        /**
+         * Returns the zip file
+         *
+         * @return Buffer
+         */
+        compressToBuffer: function () {
+            if (!loadedEntries) {
+                readEntries();
+            }
+            sortEntries();
+
+            const dataBlock = [];
+            const headerBlocks = [];
+            let totalSize = 0;
+            let dindex = 0;
+
+            mainHeader.size = 0;
+            mainHeader.offset = 0;
+            let totalEntries = 0;
+
+            for (const entry of this.entries) {
+                // compress data and set local and entry header accordingly. Reason why is called first
+                const compressedData = entry.getCompressedData();
+                entry.header.offset = dindex;
+
+                // 1. construct local header
+                const localHeader = entry.packLocalHeader();
+
+                // 2. offsets
+                const dataLength = localHeader.length + compressedData.length;
+                dindex += dataLength;
+
+                // 3. store values in sequence
+                dataBlock.push(localHeader);
+                dataBlock.push(compressedData);
+
+                // 4. construct central header
+                const centralHeader = entry.packCentralHeader();
+                headerBlocks.push(centralHeader);
+                // 5. update main header
+                mainHeader.size += centralHeader.length;
+                totalSize += dataLength + centralHeader.length;
+                totalEntries++;
+            }
+
+            totalSize += mainHeader.mainHeaderSize; // also includes zip file comment length
+            // point to end of data and beginning of central directory first record
+            mainHeader.offset = dindex;
+            mainHeader.totalEntries = totalEntries;
+
+            dindex = 0;
+            const outBuffer = Buffer.alloc(totalSize);
+            // write data blocks
+            for (const content of dataBlock) {
+                content.copy(outBuffer, dindex);
+                dindex += content.length;
+            }
+
+            // write central directory entries
+            for (const content of headerBlocks) {
+                content.copy(outBuffer, dindex);
+                dindex += content.length;
+            }
+
+            // write main header
+            const mh = mainHeader.toBinary();
+            if (_comment) {
+                _comment.copy(mh, Utils.Constants.ENDHDR); // add zip file comment
+            }
+            mh.copy(outBuffer, dindex);
+
+            // Since we update entry and main header offsets,
+            // they are no longer valid and we have to reset content
+            // (Issue 64)
+
+            inBuffer = outBuffer;
+            loadedEntries = false;
+
+            return outBuffer;
+        },
+
+        toAsyncBuffer: function (/*Function*/ onSuccess, /*Function*/ onFail, /*Function*/ onItemStart, /*Function*/ onItemEnd) {
+            try {
+                if (!loadedEntries) {
+                    readEntries();
+                }
+                sortEntries();
+
+                const dataBlock = [];
+                const centralHeaders = [];
+                let totalSize = 0;
+                let dindex = 0;
+                let totalEntries = 0;
+
+                mainHeader.size = 0;
+                mainHeader.offset = 0;
+
+                const compress2Buffer = function (entryLists) {
+                    if (entryLists.length > 0) {
+                        const entry = entryLists.shift();
+                        const name = entry.entryName + entry.extra.toString();
+                        if (onItemStart) onItemStart(name);
+                        entry.getCompressedDataAsync(function (compressedData) {
+                            if (onItemEnd) onItemEnd(name);
+                            entry.header.offset = dindex;
+
+                            // 1. construct local header
+                            const localHeader = entry.packLocalHeader();
+
+                            // 2. offsets
+                            const dataLength = localHeader.length + compressedData.length;
+                            dindex += dataLength;
+
+                            // 3. store values in sequence
+                            dataBlock.push(localHeader);
+                            dataBlock.push(compressedData);
+
+                            // central header
+                            const centalHeader = entry.packCentralHeader();
+                            centralHeaders.push(centalHeader);
+                            mainHeader.size += centalHeader.length;
+                            totalSize += dataLength + centalHeader.length;
+                            totalEntries++;
+
+                            compress2Buffer(entryLists);
+                        });
+                    } else {
+                        totalSize += mainHeader.mainHeaderSize; // also includes zip file comment length
+                        // point to end of data and beginning of central directory first record
+                        mainHeader.offset = dindex;
+                        mainHeader.totalEntries = totalEntries;
+
+                        dindex = 0;
+                        const outBuffer = Buffer.alloc(totalSize);
+                        dataBlock.forEach(function (content) {
+                            content.copy(outBuffer, dindex); // write data blocks
+                            dindex += content.length;
+                        });
+                        centralHeaders.forEach(function (content) {
+                            content.copy(outBuffer, dindex); // write central directory entries
+                            dindex += content.length;
+                        });
+
+                        const mh = mainHeader.toBinary();
+                        if (_comment) {
+                            _comment.copy(mh, Utils.Constants.ENDHDR); // add zip file comment
+                        }
+
+                        mh.copy(outBuffer, dindex); // write main header
+
+                        // Since we update entry and main header offsets, they are no
+                        // longer valid and we have to reset content using our new buffer
+                        // (Issue 64)
+
+                        inBuffer = outBuffer;
+                        loadedEntries = false;
+
+                        onSuccess(outBuffer);
+                    }
+                };
+
+                compress2Buffer(Array.from(this.entries));
+            } catch (e) {
+                onFail(e);
+            }
+        }
+    };
+};

backendia/node_modules/append-field/.npmignore

@@ -0,0 +1 @@
+node_modules/

backendia/node_modules/append-field/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Linus Unnebäck
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

backendia/node_modules/append-field/README.md

@@ -0,0 +1,44 @@
+# `append-field`
+
+A [W3C HTML JSON forms spec](http://www.w3.org/TR/html-json-forms/) compliant
+field appender (for lack of a better name). Useful for people implementing
+`application/x-www-form-urlencoded` and `multipart/form-data` parsers.
+
+It works best on objects created with `Object.create(null)`. Otherwise it might
+conflict with variables from the prototype (e.g. `hasOwnProperty`).
+
+## Installation
+
+```sh
+npm install --save append-field
+```
+
+## Usage
+
+```javascript
+var appendField = require('append-field')
+var obj = Object.create(null)
+
+appendField(obj, 'pets[0][species]', 'Dahut')
+appendField(obj, 'pets[0][name]', 'Hypatia')
+appendField(obj, 'pets[1][species]', 'Felis Stultus')
+appendField(obj, 'pets[1][name]', 'Billie')
+
+console.log(obj)
+```
+
+```text
+{ pets:
+   [ { species: 'Dahut', name: 'Hypatia' },
+     { species: 'Felis Stultus', name: 'Billie' } ] }
+```
+
+## API
+
+### `appendField(store, key, value)`
+
+Adds the field named `key` with the value `value` to the object `store`.
+
+## License
+
+MIT

backendia/node_modules/append-field/index.js

@@ -0,0 +1,12 @@
+var parsePath = require('./lib/parse-path')
+var setValue = require('./lib/set-value')
+
+function appendField (store, key, value) {
+  var steps = parsePath(key)
+
+  steps.reduce(function (context, step) {
+    return setValue(context, step, context[step.key], value)
+  }, store)
+}
+
+module.exports = appendField

backendia/node_modules/append-field/lib/parse-path.js

@@ -0,0 +1,53 @@
+var reFirstKey = /^[^\[]*/
+var reDigitPath = /^\[(\d+)\]/
+var reNormalPath = /^\[([^\]]+)\]/
+
+function parsePath (key) {
+  function failure () {
+    return [{ type: 'object', key: key, last: true }]
+  }
+
+  var firstKey = reFirstKey.exec(key)[0]
+  if (!firstKey) return failure()
+
+  var len = key.length
+  var pos = firstKey.length
+  var tail = { type: 'object', key: firstKey }
+  var steps = [tail]
+
+  while (pos < len) {
+    var m
+
+    if (key[pos] === '[' && key[pos + 1] === ']') {
+      pos += 2
+      tail.append = true
+      if (pos !== len) return failure()
+      continue
+    }
+
+    m = reDigitPath.exec(key.substring(pos))
+    if (m !== null) {
+      pos += m[0].length
+      tail.nextType = 'array'
+      tail = { type: 'array', key: parseInt(m[1], 10) }
+      steps.push(tail)
+      continue
+    }
+
+    m = reNormalPath.exec(key.substring(pos))
+    if (m !== null) {
+      pos += m[0].length
+      tail.nextType = 'object'
+      tail = { type: 'object', key: m[1] }
+      steps.push(tail)
+      continue
+    }
+
+    return failure()
+  }
+
+  tail.last = true
+  return steps
+}
+
+module.exports = parsePath

backendia/node_modules/append-field/lib/set-value.js

@@ -0,0 +1,64 @@
+function valueType (value) {
+  if (value === undefined) return 'undefined'
+  if (Array.isArray(value)) return 'array'
+  if (typeof value === 'object') return 'object'
+  return 'scalar'
+}
+
+function setLastValue (context, step, currentValue, entryValue) {
+  switch (valueType(currentValue)) {
+    case 'undefined':
+      if (step.append) {
+        context[step.key] = [entryValue]
+      } else {
+        context[step.key] = entryValue
+      }
+      break
+    case 'array':
+      context[step.key].push(entryValue)
+      break
+    case 'object':
+      return setLastValue(currentValue, { type: 'object', key: '', last: true }, currentValue[''], entryValue)
+    case 'scalar':
+      context[step.key] = [context[step.key], entryValue]
+      break
+  }
+
+  return context
+}
+
+function setValue (context, step, currentValue, entryValue) {
+  if (step.last) return setLastValue(context, step, currentValue, entryValue)
+
+  var obj
+  switch (valueType(currentValue)) {
+    case 'undefined':
+      if (step.nextType === 'array') {
+        context[step.key] = []
+      } else {
+        context[step.key] = Object.create(null)
+      }
+      return context[step.key]
+    case 'object':
+      return context[step.key]
+    case 'array':
+      if (step.nextType === 'array') {
+        return currentValue
+      }
+
+      obj = Object.create(null)
+      context[step.key] = obj
+      currentValue.forEach(function (item, i) {
+        if (item !== undefined) obj['' + i] = item
+      })
+
+      return obj
+    case 'scalar':
+      obj = Object.create(null)
+      obj[''] = currentValue
+      context[step.key] = obj
+      return obj
+  }
+}
+
+module.exports = setValue

backendia/node_modules/append-field/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "append-field",
+  "version": "1.0.0",
+  "license": "MIT",
+  "author": "Linus Unnebäck <linus@folkdatorn.se>",
+  "main": "index.js",
+  "devDependencies": {
+    "mocha": "^2.2.4",
+    "standard": "^6.0.5",
+    "testdata-w3c-json-form": "^0.2.0"
+  },
+  "scripts": {
+    "test": "standard && mocha"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/LinusU/node-append-field.git"
+  }
+}

backendia/node_modules/append-field/test/forms.js

@@ -0,0 +1,19 @@
+/* eslint-env mocha */
+
+var assert = require('assert')
+var appendField = require('../')
+var testData = require('testdata-w3c-json-form')
+
+describe('Append Field', function () {
+  for (var test of testData) {
+    it('handles ' + test.name, function () {
+      var store = Object.create(null)
+
+      for (var field of test.fields) {
+        appendField(store, field.key, field.value)
+      }
+
+      assert.deepEqual(store, test.expected)
+    })
+  }
+})

backendia/node_modules/base64-js/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Jameson Little
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

backendia/node_modules/base64-js/README.md

@@ -0,0 +1,34 @@
+base64-js
+=========
+
+`base64-js` does basic base64 encoding/decoding in pure JS.
+
+[![build status](https://secure.travis-ci.org/beatgammit/base64-js.png)](http://travis-ci.org/beatgammit/base64-js)
+
+Many browsers already have base64 encoding/decoding functionality, but it is for text data, not all-purpose binary data.
+
+Sometimes encoding/decoding binary data in the browser is useful, and that is what this module does.
+
+## install
+
+With [npm](https://npmjs.org) do:
+
+`npm install base64-js` and `var base64js = require('base64-js')`
+
+For use in web browsers do:
+
+`<script src="base64js.min.js"></script>`
+
+[Get supported base64-js with the Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-base64-js?utm_source=npm-base64-js&utm_medium=referral&utm_campaign=readme)
+
+## methods
+
+`base64js` has three exposed functions, `byteLength`, `toByteArray` and `fromByteArray`, which both take a single argument.
+
+* `byteLength` - Takes a base64 string and returns length of byte array
+* `toByteArray` - Takes a base64 string and returns a byte array
+* `fromByteArray` - Takes a byte array and returns a base64 string
+
+## license
+
+MIT

backendia/node_modules/base64-js/base64js.min.js

@@ -0,0 +1 @@
+(function(a){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=a();else if("function"==typeof define&&define.amd)define([],a);else{var b;b="undefined"==typeof window?"undefined"==typeof global?"undefined"==typeof self?this:self:global:window,b.base64js=a()}})(function(){return function(){function b(d,e,g){function a(j,i){if(!e[j]){if(!d[j]){var f="function"==typeof require&&require;if(!i&&f)return f(j,!0);if(h)return h(j,!0);var c=new Error("Cannot find module '"+j+"'");throw c.code="MODULE_NOT_FOUND",c}var k=e[j]={exports:{}};d[j][0].call(k.exports,function(b){var c=d[j][1][b];return a(c||b)},k,k.exports,b,d,e,g)}return e[j].exports}for(var h="function"==typeof require&&require,c=0;c<g.length;c++)a(g[c]);return a}return b}()({"/":[function(a,b,c){'use strict';function d(a){var b=a.length;if(0<b%4)throw new Error("Invalid string. Length must be a multiple of 4");var c=a.indexOf("=");-1===c&&(c=b);var d=c===b?0:4-c%4;return[c,d]}function e(a,b,c){return 3*(b+c)/4-c}function f(a){var b,c,f=d(a),g=f[0],h=f[1],j=new m(e(a,g,h)),k=0,n=0<h?g-4:g;for(c=0;c<n;c+=4)b=l[a.charCodeAt(c)]<<18|l[a.charCodeAt(c+1)]<<12|l[a.charCodeAt(c+2)]<<6|l[a.charCodeAt(c+3)],j[k++]=255&b>>16,j[k++]=255&b>>8,j[k++]=255&b;return 2===h&&(b=l[a.charCodeAt(c)]<<2|l[a.charCodeAt(c+1)]>>4,j[k++]=255&b),1===h&&(b=l[a.charCodeAt(c)]<<10|l[a.charCodeAt(c+1)]<<4|l[a.charCodeAt(c+2)]>>2,j[k++]=255&b>>8,j[k++]=255&b),j}function g(a){return k[63&a>>18]+k[63&a>>12]+k[63&a>>6]+k[63&a]}function h(a,b,c){for(var d,e=[],f=b;f<c;f+=3)d=(16711680&a[f]<<16)+(65280&a[f+1]<<8)+(255&a[f+2]),e.push(g(d));return e.join("")}function j(a){for(var b,c=a.length,d=c%3,e=[],f=16383,g=0,j=c-d;g<j;g+=f)e.push(h(a,g,g+f>j?j:g+f));return 1===d?(b=a[c-1],e.push(k[b>>2]+k[63&b<<4]+"==")):2===d&&(b=(a[c-2]<<8)+a[c-1],e.push(k[b>>10]+k[63&b>>4]+k[63&b<<2]+"=")),e.join("")}c.byteLength=function(a){var b=d(a),c=b[0],e=b[1];return 3*(c+e)/4-e},c.toByteArray=f,c.fromByteArray=j;for(var k=[],l=[],m="undefined"==typeof Uint8Array?Array:Uint8Array,n="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",o=0,p=n.length;o<p;++o)k[o]=n[o],l[n.charCodeAt(o)]=o;l[45]=62,l[95]=63},{}]},{},[])("/")});

backendia/node_modules/base64-js/index.d.ts

@@ -0,0 +1,3 @@
+export function byteLength(b64: string): number;
+export function toByteArray(b64: string): Uint8Array;
+export function fromByteArray(uint8: Uint8Array): string;

backendia/node_modules/base64-js/index.js

@@ -0,0 +1,150 @@
+'use strict'
+
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
+
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
+
+// Support decoding URL-safe base64 strings, as Node.js does.
+// See: https://en.wikipedia.org/wiki/Base64#URL_applications
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
+
+function getLens (b64) {
+  var len = b64.length
+
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
+
+  // Trim off extra bytes after placeholder bytes are found
+  // See: https://github.com/beatgammit/base64-js/issues/42
+  var validLen = b64.indexOf('=')
+  if (validLen === -1) validLen = len
+
+  var placeHoldersLen = validLen === len
+    ? 0
+    : 4 - (validLen % 4)
+
+  return [validLen, placeHoldersLen]
+}
+
+// base64 is 4/3 + up to two characters of the original data
+function byteLength (b64) {
+  var lens = getLens(b64)
+  var validLen = lens[0]
+  var placeHoldersLen = lens[1]
+  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
+}
+
+function _byteLength (b64, validLen, placeHoldersLen) {
+  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
+}
+
+function toByteArray (b64) {
+  var tmp
+  var lens = getLens(b64)
+  var validLen = lens[0]
+  var placeHoldersLen = lens[1]
+
+  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))
+
+  var curByte = 0
+
+  // if there are placeholders, only get up to the last complete 4 chars
+  var len = placeHoldersLen > 0
+    ? validLen - 4
+    : validLen
+
+  var i
+  for (i = 0; i < len; i += 4) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 18) |
+      (revLookup[b64.charCodeAt(i + 1)] << 12) |
+      (revLookup[b64.charCodeAt(i + 2)] << 6) |
+      revLookup[b64.charCodeAt(i + 3)]
+    arr[curByte++] = (tmp >> 16) & 0xFF
+    arr[curByte++] = (tmp >> 8) & 0xFF
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  if (placeHoldersLen === 2) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 2) |
+      (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  if (placeHoldersLen === 1) {
+    tmp =
+      (revLookup[b64.charCodeAt(i)] << 10) |
+      (revLookup[b64.charCodeAt(i + 1)] << 4) |
+      (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[curByte++] = (tmp >> 8) & 0xFF
+    arr[curByte++] = tmp & 0xFF
+  }
+
+  return arr
+}
+
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] +
+    lookup[num >> 12 & 0x3F] +
+    lookup[num >> 6 & 0x3F] +
+    lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp =
+      ((uint8[i] << 16) & 0xFF0000) +
+      ((uint8[i + 1] << 8) & 0xFF00) +
+      (uint8[i + 2] & 0xFF)
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
+
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
+
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+  }
+
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    parts.push(
+      lookup[tmp >> 2] +
+      lookup[(tmp << 4) & 0x3F] +
+      '=='
+    )
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
+    parts.push(
+      lookup[tmp >> 10] +
+      lookup[(tmp >> 4) & 0x3F] +
+      lookup[(tmp << 2) & 0x3F] +
+      '='
+    )
+  }
+
+  return parts.join('')
+}

backendia/node_modules/base64-js/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "base64-js",
+  "description": "Base64 encoding/decoding in pure JS",
+  "version": "1.5.1",
+  "author": "T. Jameson Little <t.jameson.little@gmail.com>",
+  "typings": "index.d.ts",
+  "bugs": {
+    "url": "https://github.com/beatgammit/base64-js/issues"
+  },
+  "devDependencies": {
+    "babel-minify": "^0.5.1",
+    "benchmark": "^2.1.4",
+    "browserify": "^16.3.0",
+    "standard": "*",
+    "tape": "4.x"
+  },
+  "homepage": "https://github.com/beatgammit/base64-js",
+  "keywords": [
+    "base64"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/beatgammit/base64-js.git"
+  },
+  "scripts": {
+    "build": "browserify -s base64js -r ./ | minify > base64js.min.js",
+    "lint": "standard",
+    "test": "npm run lint && npm run unit",
+    "unit": "tape test/*.js"
+  },
+  "funding": [
+    {
+      "type": "github",
+      "url": "https://github.com/sponsors/feross"
+    },
+    {
+      "type": "patreon",
+      "url": "https://www.patreon.com/feross"
+    },
+    {
+      "type": "consulting",
+      "url": "https://feross.org/support"
+    }
+  ]
+}

backendia/node_modules/bindings/LICENSE.md

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2012 Nathan Rajlich <nathan@tootallnate.net>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backendia/node_modules/bindings/README.md

@@ -0,0 +1,98 @@
+node-bindings
+=============
+### Helper module for loading your native module's `.node` file
+
+This is a helper module for authors of Node.js native addon modules.
+It is basically the "swiss army knife" of `require()`ing your native module's
+`.node` file.
+
+Throughout the course of Node's native addon history, addons have ended up being
+compiled in a variety of different places, depending on which build tool and which
+version of node was used. To make matters worse, now the `gyp` build tool can
+produce either a __Release__ or __Debug__ build, each being built into different
+locations.
+
+This module checks _all_ the possible locations that a native addon would be built
+at, and returns the first one that loads successfully.
+
+
+Installation
+------------
+
+Install with `npm`:
+
+``` bash
+$ npm install --save bindings
+```
+
+Or add it to the `"dependencies"` section of your `package.json` file.
+
+
+Example
+-------
+
+`require()`ing the proper bindings file for the current node version, platform
+and architecture is as simple as:
+
+``` js
+var bindings = require('bindings')('binding.node')
+
+// Use your bindings defined in your C files
+bindings.your_c_function()
+```
+
+
+Nice Error Output
+-----------------
+
+When the `.node` file could not be loaded, `node-bindings` throws an Error with
+a nice error message telling you exactly what was tried. You can also check the
+`err.tries` Array property.
+
+```
+Error: Could not load the bindings file. Tried:
+ → /Users/nrajlich/ref/build/binding.node
+ → /Users/nrajlich/ref/build/Debug/binding.node
+ → /Users/nrajlich/ref/build/Release/binding.node
+ → /Users/nrajlich/ref/out/Debug/binding.node
+ → /Users/nrajlich/ref/Debug/binding.node
+ → /Users/nrajlich/ref/out/Release/binding.node
+ → /Users/nrajlich/ref/Release/binding.node
+ → /Users/nrajlich/ref/build/default/binding.node
+ → /Users/nrajlich/ref/compiled/0.8.2/darwin/x64/binding.node
+    at bindings (/Users/nrajlich/ref/node_modules/bindings/bindings.js:84:13)
+    at Object.<anonymous> (/Users/nrajlich/ref/lib/ref.js:5:47)
+    at Module._compile (module.js:449:26)
+    at Object.Module._extensions..js (module.js:467:10)
+    at Module.load (module.js:356:32)
+    at Function.Module._load (module.js:312:12)
+    ...
+```
+
+The searching for the `.node` file will originate from the first directory in which has a `package.json` file is found.
+
+License
+-------
+
+(The MIT License)
+
+Copyright (c) 2012 Nathan Rajlich &lt;nathan@tootallnate.net&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backendia/node_modules/bindings/bindings.js

@@ -0,0 +1,221 @@
+/**
+ * Module dependencies.
+ */
+
+var fs = require('fs'),
+  path = require('path'),
+  fileURLToPath = require('file-uri-to-path'),
+  join = path.join,
+  dirname = path.dirname,
+  exists =
+    (fs.accessSync &&
+      function(path) {
+        try {
+          fs.accessSync(path);
+        } catch (e) {
+          return false;
+        }
+        return true;
+      }) ||
+    fs.existsSync ||
+    path.existsSync,
+  defaults = {
+    arrow: process.env.NODE_BINDINGS_ARROW || ' → ',
+    compiled: process.env.NODE_BINDINGS_COMPILED_DIR || 'compiled',
+    platform: process.platform,
+    arch: process.arch,
+    nodePreGyp:
+      'node-v' +
+      process.versions.modules +
+      '-' +
+      process.platform +
+      '-' +
+      process.arch,
+    version: process.versions.node,
+    bindings: 'bindings.node',
+    try: [
+      // node-gyp's linked version in the "build" dir
+      ['module_root', 'build', 'bindings'],
+      // node-waf and gyp_addon (a.k.a node-gyp)
+      ['module_root', 'build', 'Debug', 'bindings'],
+      ['module_root', 'build', 'Release', 'bindings'],
+      // Debug files, for development (legacy behavior, remove for node v0.9)
+      ['module_root', 'out', 'Debug', 'bindings'],
+      ['module_root', 'Debug', 'bindings'],
+      // Release files, but manually compiled (legacy behavior, remove for node v0.9)
+      ['module_root', 'out', 'Release', 'bindings'],
+      ['module_root', 'Release', 'bindings'],
+      // Legacy from node-waf, node <= 0.4.x
+      ['module_root', 'build', 'default', 'bindings'],
+      // Production "Release" buildtype binary (meh...)
+      ['module_root', 'compiled', 'version', 'platform', 'arch', 'bindings'],
+      // node-qbs builds
+      ['module_root', 'addon-build', 'release', 'install-root', 'bindings'],
+      ['module_root', 'addon-build', 'debug', 'install-root', 'bindings'],
+      ['module_root', 'addon-build', 'default', 'install-root', 'bindings'],
+      // node-pre-gyp path ./lib/binding/{node_abi}-{platform}-{arch}
+      ['module_root', 'lib', 'binding', 'nodePreGyp', 'bindings']
+    ]
+  };
+
+/**
+ * The main `bindings()` function loads the compiled bindings for a given module.
+ * It uses V8's Error API to determine the parent filename that this function is
+ * being invoked from, which is then used to find the root directory.
+ */
+
+function bindings(opts) {
+  // Argument surgery
+  if (typeof opts == 'string') {
+    opts = { bindings: opts };
+  } else if (!opts) {
+    opts = {};
+  }
+
+  // maps `defaults` onto `opts` object
+  Object.keys(defaults).map(function(i) {
+    if (!(i in opts)) opts[i] = defaults[i];
+  });
+
+  // Get the module root
+  if (!opts.module_root) {
+    opts.module_root = exports.getRoot(exports.getFileName());
+  }
+
+  // Ensure the given bindings name ends with .node
+  if (path.extname(opts.bindings) != '.node') {
+    opts.bindings += '.node';
+  }
+
+  // https://github.com/webpack/webpack/issues/4175#issuecomment-342931035
+  var requireFunc =
+    typeof __webpack_require__ === 'function'
+      ? __non_webpack_require__
+      : require;
+
+  var tries = [],
+    i = 0,
+    l = opts.try.length,
+    n,
+    b,
+    err;
+
+  for (; i < l; i++) {
+    n = join.apply(
+      null,
+      opts.try[i].map(function(p) {
+        return opts[p] || p;
+      })
+    );
+    tries.push(n);
+    try {
+      b = opts.path ? requireFunc.resolve(n) : requireFunc(n);
+      if (!opts.path) {
+        b.path = n;
+      }
+      return b;
+    } catch (e) {
+      if (e.code !== 'MODULE_NOT_FOUND' &&
+          e.code !== 'QUALIFIED_PATH_RESOLUTION_FAILED' &&
+          !/not find/i.test(e.message)) {
+        throw e;
+      }
+    }
+  }
+
+  err = new Error(
+    'Could not locate the bindings file. Tried:\n' +
+      tries
+        .map(function(a) {
+          return opts.arrow + a;
+        })
+        .join('\n')
+  );
+  err.tries = tries;
+  throw err;
+}
+module.exports = exports = bindings;
+
+/**
+ * Gets the filename of the JavaScript file that invokes this function.
+ * Used to help find the root directory of a module.
+ * Optionally accepts an filename argument to skip when searching for the invoking filename
+ */
+
+exports.getFileName = function getFileName(calling_file) {
+  var origPST = Error.prepareStackTrace,
+    origSTL = Error.stackTraceLimit,
+    dummy = {},
+    fileName;
+
+  Error.stackTraceLimit = 10;
+
+  Error.prepareStackTrace = function(e, st) {
+    for (var i = 0, l = st.length; i < l; i++) {
+      fileName = st[i].getFileName();
+      if (fileName !== __filename) {
+        if (calling_file) {
+          if (fileName !== calling_file) {
+            return;
+          }
+        } else {
+          return;
+        }
+      }
+    }
+  };
+
+  // run the 'prepareStackTrace' function above
+  Error.captureStackTrace(dummy);
+  dummy.stack;
+
+  // cleanup
+  Error.prepareStackTrace = origPST;
+  Error.stackTraceLimit = origSTL;
+
+  // handle filename that starts with "file://"
+  var fileSchema = 'file://';
+  if (fileName.indexOf(fileSchema) === 0) {
+    fileName = fileURLToPath(fileName);
+  }
+
+  return fileName;
+};
+
+/**
+ * Gets the root directory of a module, given an arbitrary filename
+ * somewhere in the module tree. The "root directory" is the directory
+ * containing the `package.json` file.
+ *
+ *   In:  /home/nate/node-native-module/lib/index.js
+ *   Out: /home/nate/node-native-module
+ */
+
+exports.getRoot = function getRoot(file) {
+  var dir = dirname(file),
+    prev;
+  while (true) {
+    if (dir === '.') {
+      // Avoids an infinite loop in rare cases, like the REPL
+      dir = process.cwd();
+    }
+    if (
+      exists(join(dir, 'package.json')) ||
+      exists(join(dir, 'node_modules'))
+    ) {
+      // Found the 'package.json' file or 'node_modules' dir; we're done
+      return dir;
+    }
+    if (prev === dir) {
+      // Got to the top
+      throw new Error(
+        'Could not find module root given file: "' +
+          file +
+          '". Do you have a `package.json` file? '
+      );
+    }
+    // Try the parent dir next
+    prev = dir;
+    dir = join(dir, '..');
+  }
+};

backendia/node_modules/bindings/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "bindings",
+  "description": "Helper module for loading your native module's .node file",
+  "keywords": [
+    "native",
+    "addon",
+    "bindings",
+    "gyp",
+    "waf",
+    "c",
+    "c++"
+  ],
+  "version": "1.5.0",
+  "author": "Nathan Rajlich <nathan@tootallnate.net> (http://tootallnate.net)",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/TooTallNate/node-bindings.git"
+  },
+  "main": "./bindings.js",
+  "bugs": {
+    "url": "https://github.com/TooTallNate/node-bindings/issues"
+  },
+  "homepage": "https://github.com/TooTallNate/node-bindings",
+  "license": "MIT",
+  "dependencies": {
+    "file-uri-to-path": "1.0.0"
+  }
+}

backendia/node_modules/bl/.travis.yml

@@ -0,0 +1,17 @@
+sudo: false
+arch:
+ - amd64
+ - ppc64le
+language: node_js
+node_js:
+  - '6'
+  - '8'
+  - '10'
+  - '12'
+  - '14'
+  - '15'
+  - lts/*
+notifications:
+  email:
+    - rod@vagg.org
+    - matteo.collina@gmail.com

backendia/node_modules/bl/BufferList.js

@@ -0,0 +1,396 @@
+'use strict'
+
+const { Buffer } = require('buffer')
+const symbol = Symbol.for('BufferList')
+
+function BufferList (buf) {
+  if (!(this instanceof BufferList)) {
+    return new BufferList(buf)
+  }
+
+  BufferList._init.call(this, buf)
+}
+
+BufferList._init = function _init (buf) {
+  Object.defineProperty(this, symbol, { value: true })
+
+  this._bufs = []
+  this.length = 0
+
+  if (buf) {
+    this.append(buf)
+  }
+}
+
+BufferList.prototype._new = function _new (buf) {
+  return new BufferList(buf)
+}
+
+BufferList.prototype._offset = function _offset (offset) {
+  if (offset === 0) {
+    return [0, 0]
+  }
+
+  let tot = 0
+
+  for (let i = 0; i < this._bufs.length; i++) {
+    const _t = tot + this._bufs[i].length
+    if (offset < _t || i === this._bufs.length - 1) {
+      return [i, offset - tot]
+    }
+    tot = _t
+  }
+}
+
+BufferList.prototype._reverseOffset = function (blOffset) {
+  const bufferId = blOffset[0]
+  let offset = blOffset[1]
+
+  for (let i = 0; i < bufferId; i++) {
+    offset += this._bufs[i].length
+  }
+
+  return offset
+}
+
+BufferList.prototype.get = function get (index) {
+  if (index > this.length || index < 0) {
+    return undefined
+  }
+
+  const offset = this._offset(index)
+
+  return this._bufs[offset[0]][offset[1]]
+}
+
+BufferList.prototype.slice = function slice (start, end) {
+  if (typeof start === 'number' && start < 0) {
+    start += this.length
+  }
+
+  if (typeof end === 'number' && end < 0) {
+    end += this.length
+  }
+
+  return this.copy(null, 0, start, end)
+}
+
+BufferList.prototype.copy = function copy (dst, dstStart, srcStart, srcEnd) {
+  if (typeof srcStart !== 'number' || srcStart < 0) {
+    srcStart = 0
+  }
+
+  if (typeof srcEnd !== 'number' || srcEnd > this.length) {
+    srcEnd = this.length
+  }
+
+  if (srcStart >= this.length) {
+    return dst || Buffer.alloc(0)
+  }
+
+  if (srcEnd <= 0) {
+    return dst || Buffer.alloc(0)
+  }
+
+  const copy = !!dst
+  const off = this._offset(srcStart)
+  const len = srcEnd - srcStart
+  let bytes = len
+  let bufoff = (copy && dstStart) || 0
+  let start = off[1]
+
+  // copy/slice everything
+  if (srcStart === 0 && srcEnd === this.length) {
+    if (!copy) {
+      // slice, but full concat if multiple buffers
+      return this._bufs.length === 1
+        ? this._bufs[0]
+        : Buffer.concat(this._bufs, this.length)
+    }
+
+    // copy, need to copy individual buffers
+    for (let i = 0; i < this._bufs.length; i++) {
+      this._bufs[i].copy(dst, bufoff)
+      bufoff += this._bufs[i].length
+    }
+
+    return dst
+  }
+
+  // easy, cheap case where it's a subset of one of the buffers
+  if (bytes <= this._bufs[off[0]].length - start) {
+    return copy
+      ? this._bufs[off[0]].copy(dst, dstStart, start, start + bytes)
+      : this._bufs[off[0]].slice(start, start + bytes)
+  }
+
+  if (!copy) {
+    // a slice, we need something to copy in to
+    dst = Buffer.allocUnsafe(len)
+  }
+
+  for (let i = off[0]; i < this._bufs.length; i++) {
+    const l = this._bufs[i].length - start
+
+    if (bytes > l) {
+      this._bufs[i].copy(dst, bufoff, start)
+      bufoff += l
+    } else {
+      this._bufs[i].copy(dst, bufoff, start, start + bytes)
+      bufoff += l
+      break
+    }
+
+    bytes -= l
+
+    if (start) {
+      start = 0
+    }
+  }
+
+  // safeguard so that we don't return uninitialized memory
+  if (dst.length > bufoff) return dst.slice(0, bufoff)
+
+  return dst
+}
+
+BufferList.prototype.shallowSlice = function shallowSlice (start, end) {
+  start = start || 0
+  end = typeof end !== 'number' ? this.length : end
+
+  if (start < 0) {
+    start += this.length
+  }
+
+  if (end < 0) {
+    end += this.length
+  }
+
+  if (start === end) {
+    return this._new()
+  }
+
+  const startOffset = this._offset(start)
+  const endOffset = this._offset(end)
+  const buffers = this._bufs.slice(startOffset[0], endOffset[0] + 1)
+
+  if (endOffset[1] === 0) {
+    buffers.pop()
+  } else {
+    buffers[buffers.length - 1] = buffers[buffers.length - 1].slice(0, endOffset[1])
+  }
+
+  if (startOffset[1] !== 0) {
+    buffers[0] = buffers[0].slice(startOffset[1])
+  }
+
+  return this._new(buffers)
+}
+
+BufferList.prototype.toString = function toString (encoding, start, end) {
+  return this.slice(start, end).toString(encoding)
+}
+
+BufferList.prototype.consume = function consume (bytes) {
+  // first, normalize the argument, in accordance with how Buffer does it
+  bytes = Math.trunc(bytes)
+  // do nothing if not a positive number
+  if (Number.isNaN(bytes) || bytes <= 0) return this
+
+  while (this._bufs.length) {
+    if (bytes >= this._bufs[0].length) {
+      bytes -= this._bufs[0].length
+      this.length -= this._bufs[0].length
+      this._bufs.shift()
+    } else {
+      this._bufs[0] = this._bufs[0].slice(bytes)
+      this.length -= bytes
+      break
+    }
+  }
+
+  return this
+}
+
+BufferList.prototype.duplicate = function duplicate () {
+  const copy = this._new()
+
+  for (let i = 0; i < this._bufs.length; i++) {
+    copy.append(this._bufs[i])
+  }
+
+  return copy
+}
+
+BufferList.prototype.append = function append (buf) {
+  if (buf == null) {
+    return this
+  }
+
+  if (buf.buffer) {
+    // append a view of the underlying ArrayBuffer
+    this._appendBuffer(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength))
+  } else if (Array.isArray(buf)) {
+    for (let i = 0; i < buf.length; i++) {
+      this.append(buf[i])
+    }
+  } else if (this._isBufferList(buf)) {
+    // unwrap argument into individual BufferLists
+    for (let i = 0; i < buf._bufs.length; i++) {
+      this.append(buf._bufs[i])
+    }
+  } else {
+    // coerce number arguments to strings, since Buffer(number) does
+    // uninitialized memory allocation
+    if (typeof buf === 'number') {
+      buf = buf.toString()
+    }
+
+    this._appendBuffer(Buffer.from(buf))
+  }
+
+  return this
+}
+
+BufferList.prototype._appendBuffer = function appendBuffer (buf) {
+  this._bufs.push(buf)
+  this.length += buf.length
+}
+
+BufferList.prototype.indexOf = function (search, offset, encoding) {
+  if (encoding === undefined && typeof offset === 'string') {
+    encoding = offset
+    offset = undefined
+  }
+
+  if (typeof search === 'function' || Array.isArray(search)) {
+    throw new TypeError('The "value" argument must be one of type string, Buffer, BufferList, or Uint8Array.')
+  } else if (typeof search === 'number') {
+    search = Buffer.from([search])
+  } else if (typeof search === 'string') {
+    search = Buffer.from(search, encoding)
+  } else if (this._isBufferList(search)) {
+    search = search.slice()
+  } else if (Array.isArray(search.buffer)) {
+    search = Buffer.from(search.buffer, search.byteOffset, search.byteLength)
+  } else if (!Buffer.isBuffer(search)) {
+    search = Buffer.from(search)
+  }
+
+  offset = Number(offset || 0)
+
+  if (isNaN(offset)) {
+    offset = 0
+  }
+
+  if (offset < 0) {
+    offset = this.length + offset
+  }
+
+  if (offset < 0) {
+    offset = 0
+  }
+
+  if (search.length === 0) {
+    return offset > this.length ? this.length : offset
+  }
+
+  const blOffset = this._offset(offset)
+  let blIndex = blOffset[0] // index of which internal buffer we're working on
+  let buffOffset = blOffset[1] // offset of the internal buffer we're working on
+
+  // scan over each buffer
+  for (; blIndex < this._bufs.length; blIndex++) {
+    const buff = this._bufs[blIndex]
+
+    while (buffOffset < buff.length) {
+      const availableWindow = buff.length - buffOffset
+
+      if (availableWindow >= search.length) {
+        const nativeSearchResult = buff.indexOf(search, buffOffset)
+
+        if (nativeSearchResult !== -1) {
+          return this._reverseOffset([blIndex, nativeSearchResult])
+        }
+
+        buffOffset = buff.length - search.length + 1 // end of native search window
+      } else {
+        const revOffset = this._reverseOffset([blIndex, buffOffset])
+
+        if (this._match(revOffset, search)) {
+          return revOffset
+        }
+
+        buffOffset++
+      }
+    }
+
+    buffOffset = 0
+  }
+
+  return -1
+}
+
+BufferList.prototype._match = function (offset, search) {
+  if (this.length - offset < search.length) {
+    return false
+  }
+
+  for (let searchOffset = 0; searchOffset < search.length; searchOffset++) {
+    if (this.get(offset + searchOffset) !== search[searchOffset]) {
+      return false
+    }
+  }
+  return true
+}
+
+;(function () {
+  const methods = {
+    readDoubleBE: 8,
+    readDoubleLE: 8,
+    readFloatBE: 4,
+    readFloatLE: 4,
+    readInt32BE: 4,
+    readInt32LE: 4,
+    readUInt32BE: 4,
+    readUInt32LE: 4,
+    readInt16BE: 2,
+    readInt16LE: 2,
+    readUInt16BE: 2,
+    readUInt16LE: 2,
+    readInt8: 1,
+    readUInt8: 1,
+    readIntBE: null,
+    readIntLE: null,
+    readUIntBE: null,
+    readUIntLE: null
+  }
+
+  for (const m in methods) {
+    (function (m) {
+      if (methods[m] === null) {
+        BufferList.prototype[m] = function (offset, byteLength) {
+          return this.slice(offset, offset + byteLength)[m](0, byteLength)
+        }
+      } else {
+        BufferList.prototype[m] = function (offset = 0) {
+          return this.slice(offset, offset + methods[m])[m](0)
+        }
+      }
+    }(m))
+  }
+}())
+
+// Used internally by the class and also as an indicator of this object being
+// a `BufferList`. It's not possible to use `instanceof BufferList` in a browser
+// environment because there could be multiple different copies of the
+// BufferList class and some `BufferList`s might be `BufferList`s.
+BufferList.prototype._isBufferList = function _isBufferList (b) {
+  return b instanceof BufferList || BufferList.isBufferList(b)
+}
+
+BufferList.isBufferList = function isBufferList (b) {
+  return b != null && b[symbol]
+}
+
+module.exports = BufferList

backendia/node_modules/bl/LICENSE.md

@@ -0,0 +1,13 @@
+The MIT License (MIT)
+=====================
+
+Copyright (c) 2013-2019 bl contributors
+----------------------------------
+
+*bl contributors listed at <https://github.com/rvagg/bl#contributors>*
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backendia/node_modules/bl/README.md

@@ -0,0 +1,247 @@
+# bl *(BufferList)*
+
+[![Build Status](https://api.travis-ci.com/rvagg/bl.svg?branch=master)](https://travis-ci.com/rvagg/bl/)
+
+**A Node.js Buffer list collector, reader and streamer thingy.**
+
+[![NPM](https://nodei.co/npm/bl.svg)](https://nodei.co/npm/bl/)
+
+**bl** is a storage object for collections of Node Buffers, exposing them with the main Buffer readable API. Also works as a duplex stream so you can collect buffers from a stream that emits them and emit buffers to a stream that consumes them!
+
+The original buffers are kept intact and copies are only done as necessary. Any reads that require the use of a single original buffer will return a slice of that buffer only (which references the same memory as the original buffer). Reads that span buffers perform concatenation as required and return the results transparently.
+
+```js
+const { BufferList } = require('bl')
+
+const bl = new BufferList()
+bl.append(Buffer.from('abcd'))
+bl.append(Buffer.from('efg'))
+bl.append('hi')                     // bl will also accept & convert Strings
+bl.append(Buffer.from('j'))
+bl.append(Buffer.from([ 0x3, 0x4 ]))
+
+console.log(bl.length) // 12
+
+console.log(bl.slice(0, 10).toString('ascii')) // 'abcdefghij'
+console.log(bl.slice(3, 10).toString('ascii')) // 'defghij'
+console.log(bl.slice(3, 6).toString('ascii'))  // 'def'
+console.log(bl.slice(3, 8).toString('ascii'))  // 'defgh'
+console.log(bl.slice(5, 10).toString('ascii')) // 'fghij'
+
+console.log(bl.indexOf('def')) // 3
+console.log(bl.indexOf('asdf')) // -1
+
+// or just use toString!
+console.log(bl.toString())               // 'abcdefghij\u0003\u0004'
+console.log(bl.toString('ascii', 3, 8))  // 'defgh'
+console.log(bl.toString('ascii', 5, 10)) // 'fghij'
+
+// other standard Buffer readables
+console.log(bl.readUInt16BE(10)) // 0x0304
+console.log(bl.readUInt16LE(10)) // 0x0403
+```
+
+Give it a callback in the constructor and use it just like **[concat-stream](https://github.com/maxogden/node-concat-stream)**:
+
+```js
+const { BufferListStream } = require('bl')
+const fs = require('fs')
+
+fs.createReadStream('README.md')
+  .pipe(BufferListStream((err, data) => { // note 'new' isn't strictly required
+    // `data` is a complete Buffer object containing the full data
+    console.log(data.toString())
+  }))
+```
+
+Note that when you use the *callback* method like this, the resulting `data` parameter is a concatenation of all `Buffer` objects in the list. If you want to avoid the overhead of this concatenation (in cases of extreme performance consciousness), then avoid the *callback* method and just listen to `'end'` instead, like a standard Stream.
+
+Or to fetch a URL using [hyperquest](https://github.com/substack/hyperquest) (should work with [request](http://github.com/mikeal/request) and even plain Node http too!):
+
+```js
+const hyperquest = require('hyperquest')
+const { BufferListStream } = require('bl')
+
+const url = 'https://raw.github.com/rvagg/bl/master/README.md'
+
+hyperquest(url).pipe(BufferListStream((err, data) => {
+  console.log(data.toString())
+}))
+```
+
+Or, use it as a readable stream to recompose a list of Buffers to an output source:
+
+```js
+const { BufferListStream } = require('bl')
+const fs = require('fs')
+
+var bl = new BufferListStream()
+bl.append(Buffer.from('abcd'))
+bl.append(Buffer.from('efg'))
+bl.append(Buffer.from('hi'))
+bl.append(Buffer.from('j'))
+
+bl.pipe(fs.createWriteStream('gibberish.txt'))
+```
+
+## API
+
+  * <a href="#ctor"><code><b>new BufferList([ buf ])</b></code></a>
+  * <a href="#isBufferList"><code><b>BufferList.isBufferList(obj)</b></code></a>
+  * <a href="#length"><code>bl.<b>length</b></code></a>
+  * <a href="#append"><code>bl.<b>append(buffer)</b></code></a>
+  * <a href="#get"><code>bl.<b>get(index)</b></code></a>
+  * <a href="#indexOf"><code>bl.<b>indexOf(value[, byteOffset][, encoding])</b></code></a>
+  * <a href="#slice"><code>bl.<b>slice([ start[, end ] ])</b></code></a>
+  * <a href="#shallowSlice"><code>bl.<b>shallowSlice([ start[, end ] ])</b></code></a>
+  * <a href="#copy"><code>bl.<b>copy(dest, [ destStart, [ srcStart [, srcEnd ] ] ])</b></code></a>
+  * <a href="#duplicate"><code>bl.<b>duplicate()</b></code></a>
+  * <a href="#consume"><code>bl.<b>consume(bytes)</b></code></a>
+  * <a href="#toString"><code>bl.<b>toString([encoding, [ start, [ end ]]])</b></code></a>
+  * <a href="#readXX"><code>bl.<b>readDoubleBE()</b></code>, <code>bl.<b>readDoubleLE()</b></code>, <code>bl.<b>readFloatBE()</b></code>, <code>bl.<b>readFloatLE()</b></code>, <code>bl.<b>readInt32BE()</b></code>, <code>bl.<b>readInt32LE()</b></code>, <code>bl.<b>readUInt32BE()</b></code>, <code>bl.<b>readUInt32LE()</b></code>, <code>bl.<b>readInt16BE()</b></code>, <code>bl.<b>readInt16LE()</b></code>, <code>bl.<b>readUInt16BE()</b></code>, <code>bl.<b>readUInt16LE()</b></code>, <code>bl.<b>readInt8()</b></code>, <code>bl.<b>readUInt8()</b></code></a>
+  * <a href="#ctorStream"><code><b>new BufferListStream([ callback ])</b></code></a>
+
+--------------------------------------------------------
+<a name="ctor"></a>
+### new BufferList([ Buffer | Buffer array | BufferList | BufferList array | String ])
+No arguments are _required_ for the constructor, but you can initialise the list by passing in a single `Buffer` object or an array of `Buffer` objects.
+
+`new` is not strictly required, if you don't instantiate a new object, it will be done automatically for you so you can create a new instance simply with:
+
+```js
+const { BufferList } = require('bl')
+const bl = BufferList()
+
+// equivalent to:
+
+const { BufferList } = require('bl')
+const bl = new BufferList()
+```
+
+--------------------------------------------------------
+<a name="isBufferList"></a>
+### BufferList.isBufferList(obj)
+Determines if the passed object is a `BufferList`. It will return `true` if the passed object is an instance of `BufferList` **or** `BufferListStream` and `false` otherwise.
+
+N.B. this won't return `true` for `BufferList` or `BufferListStream` instances created by versions of this library before this static method was added.
+
+--------------------------------------------------------
+<a name="length"></a>
+### bl.length
+Get the length of the list in bytes. This is the sum of the lengths of all of the buffers contained in the list, minus any initial offset for a semi-consumed buffer at the beginning. Should accurately represent the total number of bytes that can be read from the list.
+
+--------------------------------------------------------
+<a name="append"></a>
+### bl.append(Buffer | Buffer array | BufferList | BufferList array | String)
+`append(buffer)` adds an additional buffer or BufferList to the internal list. `this` is returned so it can be chained.
+
+--------------------------------------------------------
+<a name="get"></a>
+### bl.get(index)
+`get()` will return the byte at the specified index.
+
+--------------------------------------------------------
+<a name="indexOf"></a>
+### bl.indexOf(value[, byteOffset][, encoding])
+`get()` will return the byte at the specified index.
+`indexOf()` method returns the first index at which a given element can be found in the BufferList, or -1 if it is not present.
+
+--------------------------------------------------------
+<a name="slice"></a>
+### bl.slice([ start, [ end ] ])
+`slice()` returns a new `Buffer` object containing the bytes within the range specified. Both `start` and `end` are optional and will default to the beginning and end of the list respectively.
+
+If the requested range spans a single internal buffer then a slice of that buffer will be returned which shares the original memory range of that Buffer. If the range spans multiple buffers then copy operations will likely occur to give you a uniform Buffer.
+
+--------------------------------------------------------
+<a name="shallowSlice"></a>
+### bl.shallowSlice([ start, [ end ] ])
+`shallowSlice()` returns a new `BufferList` object containing the bytes within the range specified. Both `start` and `end` are optional and will default to the beginning and end of the list respectively.
+
+No copies will be performed. All buffers in the result share memory with the original list.
+
+--------------------------------------------------------
+<a name="copy"></a>
+### bl.copy(dest, [ destStart, [ srcStart [, srcEnd ] ] ])
+`copy()` copies the content of the list in the `dest` buffer, starting from `destStart` and containing the bytes within the range specified with `srcStart` to `srcEnd`. `destStart`, `start` and `end` are optional and will default to the beginning of the `dest` buffer, and the beginning and end of the list respectively.
+
+--------------------------------------------------------
+<a name="duplicate"></a>
+### bl.duplicate()
+`duplicate()` performs a **shallow-copy** of the list. The internal Buffers remains the same, so if you change the underlying Buffers, the change will be reflected in both the original and the duplicate. This method is needed if you want to call `consume()` or `pipe()` and still keep the original list.Example:
+
+```js
+var bl = new BufferListStream()
+
+bl.append('hello')
+bl.append(' world')
+bl.append('\n')
+
+bl.duplicate().pipe(process.stdout, { end: false })
+
+console.log(bl.toString())
+```
+
+--------------------------------------------------------
+<a name="consume"></a>
+### bl.consume(bytes)
+`consume()` will shift bytes *off the start of the list*. The number of bytes consumed don't need to line up with the sizes of the internal Buffers&mdash;initial offsets will be calculated accordingly in order to give you a consistent view of the data.
+
+--------------------------------------------------------
+<a name="toString"></a>
+### bl.toString([encoding, [ start, [ end ]]])
+`toString()` will return a string representation of the buffer. The optional `start` and `end` arguments are passed on to `slice()`, while the `encoding` is passed on to `toString()` of the resulting Buffer. See the [Buffer#toString()](http://nodejs.org/docs/latest/api/buffer.html#buffer_buf_tostring_encoding_start_end) documentation for more information.
+
+--------------------------------------------------------
+<a name="readXX"></a>
+### bl.readDoubleBE(), bl.readDoubleLE(), bl.readFloatBE(), bl.readFloatLE(), bl.readInt32BE(), bl.readInt32LE(), bl.readUInt32BE(), bl.readUInt32LE(), bl.readInt16BE(), bl.readInt16LE(), bl.readUInt16BE(), bl.readUInt16LE(), bl.readInt8(), bl.readUInt8()
+
+All of the standard byte-reading methods of the `Buffer` interface are implemented and will operate across internal Buffer boundaries transparently.
+
+See the <b><code>[Buffer](http://nodejs.org/docs/latest/api/buffer.html)</code></b> documentation for how these work.
+
+--------------------------------------------------------
+<a name="ctorStream"></a>
+### new BufferListStream([ callback | Buffer | Buffer array | BufferList | BufferList array | String ])
+**BufferListStream** is a Node **[Duplex Stream](http://nodejs.org/docs/latest/api/stream.html#stream_class_stream_duplex)**, so it can be read from and written to like a standard Node stream. You can also `pipe()` to and from a **BufferListStream** instance.
+
+The constructor takes an optional callback, if supplied, the callback will be called with an error argument followed by a reference to the **bl** instance, when `bl.end()` is called (i.e. from a piped stream). This is a convenient method of collecting the entire contents of a stream, particularly when the stream is *chunky*, such as a network stream.
+
+Normally, no arguments are required for the constructor, but you can initialise the list by passing in a single `Buffer` object or an array of `Buffer` object.
+
+`new` is not strictly required, if you don't instantiate a new object, it will be done automatically for you so you can create a new instance simply with:
+
+```js
+const { BufferListStream } = require('bl')
+const bl = BufferListStream()
+
+// equivalent to:
+
+const { BufferListStream } = require('bl')
+const bl = new BufferListStream()
+```
+
+N.B. For backwards compatibility reasons, `BufferListStream` is the **default** export when you `require('bl')`:
+
+```js
+const { BufferListStream } = require('bl')
+// equivalent to:
+const BufferListStream = require('bl')
+```
+
+--------------------------------------------------------
+
+## Contributors
+
+**bl** is brought to you by the following hackers:
+
+ * [Rod Vagg](https://github.com/rvagg)
+ * [Matteo Collina](https://github.com/mcollina)
+ * [Jarett Cruger](https://github.com/jcrugzz)
+
+<a name="license"></a>
+## License &amp; copyright
+
+Copyright (c) 2013-2019 bl contributors (listed above).
+
+bl is licensed under the MIT license. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE.md file for more details.

backendia/node_modules/bl/bl.js

@@ -0,0 +1,84 @@
+'use strict'
+
+const DuplexStream = require('readable-stream').Duplex
+const inherits = require('inherits')
+const BufferList = require('./BufferList')
+
+function BufferListStream (callback) {
+  if (!(this instanceof BufferListStream)) {
+    return new BufferListStream(callback)
+  }
+
+  if (typeof callback === 'function') {
+    this._callback = callback
+
+    const piper = function piper (err) {
+      if (this._callback) {
+        this._callback(err)
+        this._callback = null
+      }
+    }.bind(this)
+
+    this.on('pipe', function onPipe (src) {
+      src.on('error', piper)
+    })
+    this.on('unpipe', function onUnpipe (src) {
+      src.removeListener('error', piper)
+    })
+
+    callback = null
+  }
+
+  BufferList._init.call(this, callback)
+  DuplexStream.call(this)
+}
+
+inherits(BufferListStream, DuplexStream)
+Object.assign(BufferListStream.prototype, BufferList.prototype)
+
+BufferListStream.prototype._new = function _new (callback) {
+  return new BufferListStream(callback)
+}
+
+BufferListStream.prototype._write = function _write (buf, encoding, callback) {
+  this._appendBuffer(buf)
+
+  if (typeof callback === 'function') {
+    callback()
+  }
+}
+
+BufferListStream.prototype._read = function _read (size) {
+  if (!this.length) {
+    return this.push(null)
+  }
+
+  size = Math.min(size, this.length)
+  this.push(this.slice(0, size))
+  this.consume(size)
+}
+
+BufferListStream.prototype.end = function end (chunk) {
+  DuplexStream.prototype.end.call(this, chunk)
+
+  if (this._callback) {
+    this._callback(null, this.slice())
+    this._callback = null
+  }
+}
+
+BufferListStream.prototype._destroy = function _destroy (err, cb) {
+  this._bufs.length = 0
+  this.length = 0
+  cb(err)
+}
+
+BufferListStream.prototype._isBufferList = function _isBufferList (b) {
+  return b instanceof BufferListStream || b instanceof BufferList || BufferListStream.isBufferList(b)
+}
+
+BufferListStream.isBufferList = BufferList.isBufferList
+
+module.exports = BufferListStream
+module.exports.BufferListStream = BufferListStream
+module.exports.BufferList = BufferList

backendia/node_modules/bl/package.json

@@ -0,0 +1,37 @@
+{
+  "name": "bl",
+  "version": "4.1.0",
+  "description": "Buffer List: collect buffers and access with a standard readable Buffer interface, streamable too!",
+  "license": "MIT",
+  "main": "bl.js",
+  "scripts": {
+    "lint": "standard *.js test/*.js",
+    "test": "npm run lint && node test/test.js | faucet"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/rvagg/bl.git"
+  },
+  "homepage": "https://github.com/rvagg/bl",
+  "authors": [
+    "Rod Vagg <rod@vagg.org> (https://github.com/rvagg)",
+    "Matteo Collina <matteo.collina@gmail.com> (https://github.com/mcollina)",
+    "Jarett Cruger <jcrugzz@gmail.com> (https://github.com/jcrugzz)"
+  ],
+  "keywords": [
+    "buffer",
+    "buffers",
+    "stream",
+    "awesomesauce"
+  ],
+  "dependencies": {
+    "buffer": "^5.5.0",
+    "inherits": "^2.0.4",
+    "readable-stream": "^3.4.0"
+  },
+  "devDependencies": {
+    "faucet": "~0.0.1",
+    "standard": "^14.3.0",
+    "tape": "^4.11.0"
+  }
+}

backendia/node_modules/bl/test/convert.js

@@ -0,0 +1,21 @@
+'use strict'
+
+const tape = require('tape')
+const { BufferList, BufferListStream } = require('../')
+const { Buffer } = require('buffer')
+
+tape('convert from BufferList to BufferListStream', (t) => {
+  const data = Buffer.from(`TEST-${Date.now()}`)
+  const bl = new BufferList(data)
+  const bls = new BufferListStream(bl)
+  t.ok(bl.slice().equals(bls.slice()))
+  t.end()
+})
+
+tape('convert from BufferListStream to BufferList', (t) => {
+  const data = Buffer.from(`TEST-${Date.now()}`)
+  const bls = new BufferListStream(data)
+  const bl = new BufferList(bls)
+  t.ok(bl.slice().equals(bls.slice()))
+  t.end()
+})

backendia/node_modules/bl/test/indexOf.js

@@ -0,0 +1,492 @@
+'use strict'
+
+const tape = require('tape')
+const BufferList = require('../')
+const { Buffer } = require('buffer')
+
+tape('indexOf single byte needle', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg', '12345'])
+
+  t.equal(bl.indexOf('e'), 4)
+  t.equal(bl.indexOf('e', 5), 11)
+  t.equal(bl.indexOf('e', 12), -1)
+  t.equal(bl.indexOf('5'), 18)
+
+  t.end()
+})
+
+tape('indexOf multiple byte needle', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+
+  t.equal(bl.indexOf('ef'), 4)
+  t.equal(bl.indexOf('ef', 5), 11)
+
+  t.end()
+})
+
+tape('indexOf multiple byte needles across buffer boundaries', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+
+  t.equal(bl.indexOf('fgabc'), 5)
+
+  t.end()
+})
+
+tape('indexOf takes a Uint8Array search', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+  const search = new Uint8Array([102, 103, 97, 98, 99]) // fgabc
+
+  t.equal(bl.indexOf(search), 5)
+
+  t.end()
+})
+
+tape('indexOf takes a buffer list search', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+  const search = new BufferList('fgabc')
+
+  t.equal(bl.indexOf(search), 5)
+
+  t.end()
+})
+
+tape('indexOf a zero byte needle', (t) => {
+  const b = new BufferList('abcdef')
+  const bufEmpty = Buffer.from('')
+
+  t.equal(b.indexOf(''), 0)
+  t.equal(b.indexOf('', 1), 1)
+  t.equal(b.indexOf('', b.length + 1), b.length)
+  t.equal(b.indexOf('', Infinity), b.length)
+  t.equal(b.indexOf(bufEmpty), 0)
+  t.equal(b.indexOf(bufEmpty, 1), 1)
+  t.equal(b.indexOf(bufEmpty, b.length + 1), b.length)
+  t.equal(b.indexOf(bufEmpty, Infinity), b.length)
+
+  t.end()
+})
+
+tape('indexOf buffers smaller and larger than the needle', (t) => {
+  const bl = new BufferList(['abcdefg', 'a', 'bcdefg', 'a', 'bcfgab'])
+
+  t.equal(bl.indexOf('fgabc'), 5)
+  t.equal(bl.indexOf('fgabc', 6), 12)
+  t.equal(bl.indexOf('fgabc', 13), -1)
+
+  t.end()
+})
+
+// only present in node 6+
+;(process.version.substr(1).split('.')[0] >= 6) && tape('indexOf latin1 and binary encoding', (t) => {
+  const b = new BufferList('abcdef')
+
+  // test latin1 encoding
+  t.equal(
+    new BufferList(Buffer.from(b.toString('latin1'), 'latin1'))
+      .indexOf('d', 0, 'latin1'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from(b.toString('latin1'), 'latin1'))
+      .indexOf(Buffer.from('d', 'latin1'), 0, 'latin1'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from('aa\u00e8aa', 'latin1'))
+      .indexOf('\u00e8', 'latin1'),
+    2
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'latin1'))
+      .indexOf('\u00e8', 'latin1'),
+    0
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'latin1'))
+      .indexOf(Buffer.from('\u00e8', 'latin1'), 'latin1'),
+    0
+  )
+
+  // test binary encoding
+  t.equal(
+    new BufferList(Buffer.from(b.toString('binary'), 'binary'))
+      .indexOf('d', 0, 'binary'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from(b.toString('binary'), 'binary'))
+      .indexOf(Buffer.from('d', 'binary'), 0, 'binary'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from('aa\u00e8aa', 'binary'))
+      .indexOf('\u00e8', 'binary'),
+    2
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'binary'))
+      .indexOf('\u00e8', 'binary'),
+    0
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'binary'))
+      .indexOf(Buffer.from('\u00e8', 'binary'), 'binary'),
+    0
+  )
+
+  t.end()
+})
+
+tape('indexOf the entire nodejs10 buffer test suite', (t) => {
+  const b = new BufferList('abcdef')
+  const bufA = Buffer.from('a')
+  const bufBc = Buffer.from('bc')
+  const bufF = Buffer.from('f')
+  const bufZ = Buffer.from('z')
+
+  const stringComparison = 'abcdef'
+
+  t.equal(b.indexOf('a'), 0)
+  t.equal(b.indexOf('a', 1), -1)
+  t.equal(b.indexOf('a', -1), -1)
+  t.equal(b.indexOf('a', -4), -1)
+  t.equal(b.indexOf('a', -b.length), 0)
+  t.equal(b.indexOf('a', NaN), 0)
+  t.equal(b.indexOf('a', -Infinity), 0)
+  t.equal(b.indexOf('a', Infinity), -1)
+  t.equal(b.indexOf('bc'), 1)
+  t.equal(b.indexOf('bc', 2), -1)
+  t.equal(b.indexOf('bc', -1), -1)
+  t.equal(b.indexOf('bc', -3), -1)
+  t.equal(b.indexOf('bc', -5), 1)
+  t.equal(b.indexOf('bc', NaN), 1)
+  t.equal(b.indexOf('bc', -Infinity), 1)
+  t.equal(b.indexOf('bc', Infinity), -1)
+  t.equal(b.indexOf('f'), b.length - 1)
+  t.equal(b.indexOf('z'), -1)
+
+  // empty search tests
+  t.equal(b.indexOf(bufA), 0)
+  t.equal(b.indexOf(bufA, 1), -1)
+  t.equal(b.indexOf(bufA, -1), -1)
+  t.equal(b.indexOf(bufA, -4), -1)
+  t.equal(b.indexOf(bufA, -b.length), 0)
+  t.equal(b.indexOf(bufA, NaN), 0)
+  t.equal(b.indexOf(bufA, -Infinity), 0)
+  t.equal(b.indexOf(bufA, Infinity), -1)
+  t.equal(b.indexOf(bufBc), 1)
+  t.equal(b.indexOf(bufBc, 2), -1)
+  t.equal(b.indexOf(bufBc, -1), -1)
+  t.equal(b.indexOf(bufBc, -3), -1)
+  t.equal(b.indexOf(bufBc, -5), 1)
+  t.equal(b.indexOf(bufBc, NaN), 1)
+  t.equal(b.indexOf(bufBc, -Infinity), 1)
+  t.equal(b.indexOf(bufBc, Infinity), -1)
+  t.equal(b.indexOf(bufF), b.length - 1)
+  t.equal(b.indexOf(bufZ), -1)
+  t.equal(b.indexOf(0x61), 0)
+  t.equal(b.indexOf(0x61, 1), -1)
+  t.equal(b.indexOf(0x61, -1), -1)
+  t.equal(b.indexOf(0x61, -4), -1)
+  t.equal(b.indexOf(0x61, -b.length), 0)
+  t.equal(b.indexOf(0x61, NaN), 0)
+  t.equal(b.indexOf(0x61, -Infinity), 0)
+  t.equal(b.indexOf(0x61, Infinity), -1)
+  t.equal(b.indexOf(0x0), -1)
+
+  // test offsets
+  t.equal(b.indexOf('d', 2), 3)
+  t.equal(b.indexOf('f', 5), 5)
+  t.equal(b.indexOf('f', -1), 5)
+  t.equal(b.indexOf('f', 6), -1)
+
+  t.equal(b.indexOf(Buffer.from('d'), 2), 3)
+  t.equal(b.indexOf(Buffer.from('f'), 5), 5)
+  t.equal(b.indexOf(Buffer.from('f'), -1), 5)
+  t.equal(b.indexOf(Buffer.from('f'), 6), -1)
+
+  t.equal(Buffer.from('ff').indexOf(Buffer.from('f'), 1, 'ucs2'), -1)
+
+  // test invalid and uppercase encoding
+  t.equal(b.indexOf('b', 'utf8'), 1)
+  t.equal(b.indexOf('b', 'UTF8'), 1)
+  t.equal(b.indexOf('62', 'HEX'), 1)
+  t.throws(() => b.indexOf('bad', 'enc'), TypeError)
+
+  // test hex encoding
+  t.equal(
+    Buffer.from(b.toString('hex'), 'hex')
+      .indexOf('64', 0, 'hex'),
+    3
+  )
+  t.equal(
+    Buffer.from(b.toString('hex'), 'hex')
+      .indexOf(Buffer.from('64', 'hex'), 0, 'hex'),
+    3
+  )
+
+  // test base64 encoding
+  t.equal(
+    Buffer.from(b.toString('base64'), 'base64')
+      .indexOf('ZA==', 0, 'base64'),
+    3
+  )
+  t.equal(
+    Buffer.from(b.toString('base64'), 'base64')
+      .indexOf(Buffer.from('ZA==', 'base64'), 0, 'base64'),
+    3
+  )
+
+  // test ascii encoding
+  t.equal(
+    Buffer.from(b.toString('ascii'), 'ascii')
+      .indexOf('d', 0, 'ascii'),
+    3
+  )
+  t.equal(
+    Buffer.from(b.toString('ascii'), 'ascii')
+      .indexOf(Buffer.from('d', 'ascii'), 0, 'ascii'),
+    3
+  )
+
+  // test optional offset with passed encoding
+  t.equal(Buffer.from('aaaa0').indexOf('30', 'hex'), 4)
+  t.equal(Buffer.from('aaaa00a').indexOf('3030', 'hex'), 4)
+
+  {
+    // test usc2 encoding
+    const twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2')
+
+    t.equal(8, twoByteString.indexOf('\u0395', 4, 'ucs2'))
+    t.equal(6, twoByteString.indexOf('\u03a3', -4, 'ucs2'))
+    t.equal(4, twoByteString.indexOf('\u03a3', -6, 'ucs2'))
+    t.equal(4, twoByteString.indexOf(
+      Buffer.from('\u03a3', 'ucs2'), -6, 'ucs2'))
+    t.equal(-1, twoByteString.indexOf('\u03a3', -2, 'ucs2'))
+  }
+
+  const mixedByteStringUcs2 =
+      Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395', 'ucs2')
+
+  t.equal(6, mixedByteStringUcs2.indexOf('bc', 0, 'ucs2'))
+  t.equal(10, mixedByteStringUcs2.indexOf('\u03a3', 0, 'ucs2'))
+  t.equal(-1, mixedByteStringUcs2.indexOf('\u0396', 0, 'ucs2'))
+
+  t.equal(
+    6, mixedByteStringUcs2.indexOf(Buffer.from('bc', 'ucs2'), 0, 'ucs2'))
+  t.equal(
+    10, mixedByteStringUcs2.indexOf(Buffer.from('\u03a3', 'ucs2'), 0, 'ucs2'))
+  t.equal(
+    -1, mixedByteStringUcs2.indexOf(Buffer.from('\u0396', 'ucs2'), 0, 'ucs2'))
+
+  {
+    const twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2')
+
+    // Test single char pattern
+    t.equal(0, twoByteString.indexOf('\u039a', 0, 'ucs2'))
+    let index = twoByteString.indexOf('\u0391', 0, 'ucs2')
+    t.equal(2, index, `Alpha - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3', 0, 'ucs2')
+    t.equal(4, index, `First Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3', 6, 'ucs2')
+    t.equal(6, index, `Second Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u0395', 0, 'ucs2')
+    t.equal(8, index, `Epsilon - at index ${index}`)
+    index = twoByteString.indexOf('\u0392', 0, 'ucs2')
+    t.equal(-1, index, `Not beta - at index ${index}`)
+
+    // Test multi-char pattern
+    index = twoByteString.indexOf('\u039a\u0391', 0, 'ucs2')
+    t.equal(0, index, `Lambda Alpha - at index ${index}`)
+    index = twoByteString.indexOf('\u0391\u03a3', 0, 'ucs2')
+    t.equal(2, index, `Alpha Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3\u03a3', 0, 'ucs2')
+    t.equal(4, index, `Sigma Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3\u0395', 0, 'ucs2')
+    t.equal(6, index, `Sigma Epsilon - at index ${index}`)
+  }
+
+  const mixedByteStringUtf8 = Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395')
+
+  t.equal(5, mixedByteStringUtf8.indexOf('bc'))
+  t.equal(5, mixedByteStringUtf8.indexOf('bc', 5))
+  t.equal(5, mixedByteStringUtf8.indexOf('bc', -8))
+  t.equal(7, mixedByteStringUtf8.indexOf('\u03a3'))
+  t.equal(-1, mixedByteStringUtf8.indexOf('\u0396'))
+
+  // Test complex string indexOf algorithms. Only trigger for long strings.
+  // Long string that isn't a simple repeat of a shorter string.
+  let longString = 'A'
+  for (let i = 66; i < 76; i++) { // from 'B' to 'K'
+    longString = longString + String.fromCharCode(i) + longString
+  }
+
+  const longBufferString = Buffer.from(longString)
+
+  // pattern of 15 chars, repeated every 16 chars in long
+  let pattern = 'ABACABADABACABA'
+  for (let i = 0; i < longBufferString.length - pattern.length; i += 7) {
+    const index = longBufferString.indexOf(pattern, i)
+    t.equal((i + 15) & ~0xf, index,
+      `Long ABACABA...-string at index ${i}`)
+  }
+
+  let index = longBufferString.indexOf('AJABACA')
+  t.equal(510, index, `Long AJABACA, First J - at index ${index}`)
+  index = longBufferString.indexOf('AJABACA', 511)
+  t.equal(1534, index, `Long AJABACA, Second J - at index ${index}`)
+
+  pattern = 'JABACABADABACABA'
+  index = longBufferString.indexOf(pattern)
+  t.equal(511, index, `Long JABACABA..., First J - at index ${index}`)
+  index = longBufferString.indexOf(pattern, 512)
+  t.equal(
+    1535, index, `Long JABACABA..., Second J - at index ${index}`)
+
+  // Search for a non-ASCII string in a pure ASCII string.
+  const asciiString = Buffer.from(
+    'somethingnotatallsinisterwhichalsoworks')
+  t.equal(-1, asciiString.indexOf('\x2061'))
+  t.equal(3, asciiString.indexOf('eth', 0))
+
+  // Search in string containing many non-ASCII chars.
+  const allCodePoints = []
+  for (let i = 0; i < 65536; i++) {
+    allCodePoints[i] = i
+  }
+
+  const allCharsString = String.fromCharCode.apply(String, allCodePoints)
+  const allCharsBufferUtf8 = Buffer.from(allCharsString)
+  const allCharsBufferUcs2 = Buffer.from(allCharsString, 'ucs2')
+
+  // Search for string long enough to trigger complex search with ASCII pattern
+  // and UC16 subject.
+  t.equal(-1, allCharsBufferUtf8.indexOf('notfound'))
+  t.equal(-1, allCharsBufferUcs2.indexOf('notfound'))
+
+  // Needle is longer than haystack, but only because it's encoded as UTF-16
+  t.equal(Buffer.from('aaaa').indexOf('a'.repeat(4), 'ucs2'), -1)
+
+  t.equal(Buffer.from('aaaa').indexOf('a'.repeat(4), 'utf8'), 0)
+  t.equal(Buffer.from('aaaa').indexOf('你好', 'ucs2'), -1)
+
+  // Haystack has odd length, but the needle is UCS2.
+  t.equal(Buffer.from('aaaaa').indexOf('b', 'ucs2'), -1)
+
+  {
+    // Find substrings in Utf8.
+    const lengths = [1, 3, 15] // Single char, simple and complex.
+    const indices = [0x5, 0x60, 0x400, 0x680, 0x7ee, 0xFF02, 0x16610, 0x2f77b]
+    for (let lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
+      for (let i = 0; i < indices.length; i++) {
+        const index = indices[i]
+        let length = lengths[lengthIndex]
+
+        if (index + length > 0x7F) {
+          length = 2 * length
+        }
+
+        if (index + length > 0x7FF) {
+          length = 3 * length
+        }
+
+        if (index + length > 0xFFFF) {
+          length = 4 * length
+        }
+
+        const patternBufferUtf8 = allCharsBufferUtf8.slice(index, index + length)
+        t.equal(index, allCharsBufferUtf8.indexOf(patternBufferUtf8))
+
+        const patternStringUtf8 = patternBufferUtf8.toString()
+        t.equal(index, allCharsBufferUtf8.indexOf(patternStringUtf8))
+      }
+    }
+  }
+
+  {
+    // Find substrings in Usc2.
+    const lengths = [2, 4, 16] // Single char, simple and complex.
+    const indices = [0x5, 0x65, 0x105, 0x205, 0x285, 0x2005, 0x2085, 0xfff0]
+
+    for (let lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
+      for (let i = 0; i < indices.length; i++) {
+        const index = indices[i] * 2
+        const length = lengths[lengthIndex]
+
+        const patternBufferUcs2 =
+            allCharsBufferUcs2.slice(index, index + length)
+        t.equal(
+          index, allCharsBufferUcs2.indexOf(patternBufferUcs2, 0, 'ucs2'))
+
+        const patternStringUcs2 = patternBufferUcs2.toString('ucs2')
+        t.equal(
+          index, allCharsBufferUcs2.indexOf(patternStringUcs2, 0, 'ucs2'))
+      }
+    }
+  }
+
+  [
+    () => {},
+    {},
+    []
+  ].forEach((val) => {
+    t.throws(() => b.indexOf(val), TypeError, `"${JSON.stringify(val)}" should throw`)
+  })
+
+  // Test weird offset arguments.
+  // The following offsets coerce to NaN or 0, searching the whole Buffer
+  t.equal(b.indexOf('b', undefined), 1)
+  t.equal(b.indexOf('b', {}), 1)
+  t.equal(b.indexOf('b', 0), 1)
+  t.equal(b.indexOf('b', null), 1)
+  t.equal(b.indexOf('b', []), 1)
+
+  // The following offset coerces to 2, in other words +[2] === 2
+  t.equal(b.indexOf('b', [2]), -1)
+
+  // Behavior should match String.indexOf()
+  t.equal(
+    b.indexOf('b', undefined),
+    stringComparison.indexOf('b', undefined))
+  t.equal(
+    b.indexOf('b', {}),
+    stringComparison.indexOf('b', {}))
+  t.equal(
+    b.indexOf('b', 0),
+    stringComparison.indexOf('b', 0))
+  t.equal(
+    b.indexOf('b', null),
+    stringComparison.indexOf('b', null))
+  t.equal(
+    b.indexOf('b', []),
+    stringComparison.indexOf('b', []))
+  t.equal(
+    b.indexOf('b', [2]),
+    stringComparison.indexOf('b', [2]))
+
+  // test truncation of Number arguments to uint8
+  {
+    const buf = Buffer.from('this is a test')
+
+    t.equal(buf.indexOf(0x6973), 3)
+    t.equal(buf.indexOf(0x697320), 4)
+    t.equal(buf.indexOf(0x69732069), 2)
+    t.equal(buf.indexOf(0x697374657374), 0)
+    t.equal(buf.indexOf(0x69737374), 0)
+    t.equal(buf.indexOf(0x69737465), 11)
+    t.equal(buf.indexOf(0x69737465), 11)
+    t.equal(buf.indexOf(-140), 0)
+    t.equal(buf.indexOf(-152), 1)
+    t.equal(buf.indexOf(0xff), -1)
+    t.equal(buf.indexOf(0xffff), -1)
+  }
+
+  // Test that Uint8Array arguments are okay.
+  {
+    const needle = new Uint8Array([0x66, 0x6f, 0x6f])
+    const haystack = new BufferList(Buffer.from('a foo b foo'))
+    t.equal(haystack.indexOf(needle), 2)
+  }
+
+  t.end()
+})

backendia/node_modules/bl/test/isBufferList.js

@@ -0,0 +1,32 @@
+'use strict'
+
+const tape = require('tape')
+const { BufferList, BufferListStream } = require('../')
+const { Buffer } = require('buffer')
+
+tape('isBufferList positives', (t) => {
+  t.ok(BufferList.isBufferList(new BufferList()))
+  t.ok(BufferList.isBufferList(new BufferListStream()))
+
+  t.end()
+})
+
+tape('isBufferList negatives', (t) => {
+  const types = [
+    null,
+    undefined,
+    NaN,
+    true,
+    false,
+    {},
+    [],
+    Buffer.alloc(0),
+    [Buffer.alloc(0)]
+  ]
+
+  for (const obj of types) {
+    t.notOk(BufferList.isBufferList(obj))
+  }
+
+  t.end()
+})

backendia/node_modules/bl/test/test.js

@@ -0,0 +1,869 @@
+'use strict'
+
+const tape = require('tape')
+const crypto = require('crypto')
+const fs = require('fs')
+const path = require('path')
+const BufferList = require('../')
+const { Buffer } = require('buffer')
+
+const encodings =
+      ('hex utf8 utf-8 ascii binary base64' +
+          (process.browser ? '' : ' ucs2 ucs-2 utf16le utf-16le')).split(' ')
+
+require('./indexOf')
+require('./isBufferList')
+require('./convert')
+
+tape('single bytes from single buffer', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+
+  t.equal(bl.length, 4)
+  t.equal(bl.get(-1), undefined)
+  t.equal(bl.get(0), 97)
+  t.equal(bl.get(1), 98)
+  t.equal(bl.get(2), 99)
+  t.equal(bl.get(3), 100)
+  t.equal(bl.get(4), undefined)
+
+  t.end()
+})
+
+tape('single bytes from multiple buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.get(0), 97)
+  t.equal(bl.get(1), 98)
+  t.equal(bl.get(2), 99)
+  t.equal(bl.get(3), 100)
+  t.equal(bl.get(4), 101)
+  t.equal(bl.get(5), 102)
+  t.equal(bl.get(6), 103)
+  t.equal(bl.get(7), 104)
+  t.equal(bl.get(8), 105)
+  t.equal(bl.get(9), 106)
+
+  t.end()
+})
+
+tape('multi bytes from single buffer', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+
+  t.equal(bl.length, 4)
+
+  t.equal(bl.slice(0, 4).toString('ascii'), 'abcd')
+  t.equal(bl.slice(0, 3).toString('ascii'), 'abc')
+  t.equal(bl.slice(1, 4).toString('ascii'), 'bcd')
+  t.equal(bl.slice(-4, -1).toString('ascii'), 'abc')
+
+  t.end()
+})
+
+tape('multi bytes from single buffer (negative indexes)', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('buffer'))
+
+  t.equal(bl.length, 6)
+
+  t.equal(bl.slice(-6, -1).toString('ascii'), 'buffe')
+  t.equal(bl.slice(-6, -2).toString('ascii'), 'buff')
+  t.equal(bl.slice(-5, -2).toString('ascii'), 'uff')
+
+  t.end()
+})
+
+tape('multiple bytes from multiple buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
+  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
+  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
+  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
+  t.equal(bl.slice(-7, -4).toString('ascii'), 'def')
+
+  t.end()
+})
+
+tape('multiple bytes from multiple buffer lists', function (t) {
+  const bl = new BufferList()
+
+  bl.append(new BufferList([Buffer.from('abcd'), Buffer.from('efg')]))
+  bl.append(new BufferList([Buffer.from('hi'), Buffer.from('j')]))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+
+  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
+  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
+  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
+  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
+
+  t.end()
+})
+
+// same data as previous test, just using nested constructors
+tape('multiple bytes from crazy nested buffer lists', function (t) {
+  const bl = new BufferList()
+
+  bl.append(new BufferList([
+    new BufferList([
+      new BufferList(Buffer.from('abc')),
+      Buffer.from('d'),
+      new BufferList(Buffer.from('efg'))
+    ]),
+    new BufferList([Buffer.from('hi')]),
+    new BufferList(Buffer.from('j'))
+  ]))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+
+  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
+  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
+  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
+  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
+
+  t.end()
+})
+
+tape('append accepts arrays of Buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abc'))
+  bl.append([Buffer.from('def')])
+  bl.append([Buffer.from('ghi'), Buffer.from('jkl')])
+  bl.append([Buffer.from('mnop'), Buffer.from('qrstu'), Buffer.from('vwxyz')])
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('append accepts arrays of Uint8Arrays', function (t) {
+  const bl = new BufferList()
+
+  bl.append(new Uint8Array([97, 98, 99]))
+  bl.append([Uint8Array.from([100, 101, 102])])
+  bl.append([new Uint8Array([103, 104, 105]), new Uint8Array([106, 107, 108])])
+  bl.append([new Uint8Array([109, 110, 111, 112]), new Uint8Array([113, 114, 115, 116, 117]), new Uint8Array([118, 119, 120, 121, 122])])
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('append accepts arrays of BufferLists', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abc'))
+  bl.append([new BufferList('def')])
+  bl.append(new BufferList([Buffer.from('ghi'), new BufferList('jkl')]))
+  bl.append([Buffer.from('mnop'), new BufferList([Buffer.from('qrstu'), Buffer.from('vwxyz')])])
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('append chainable', function (t) {
+  const bl = new BufferList()
+
+  t.ok(bl.append(Buffer.from('abcd')) === bl)
+  t.ok(bl.append([Buffer.from('abcd')]) === bl)
+  t.ok(bl.append(new BufferList(Buffer.from('abcd'))) === bl)
+  t.ok(bl.append([new BufferList(Buffer.from('abcd'))]) === bl)
+
+  t.end()
+})
+
+tape('append chainable (test results)', function (t) {
+  const bl = new BufferList('abc')
+    .append([new BufferList('def')])
+    .append(new BufferList([Buffer.from('ghi'), new BufferList('jkl')]))
+    .append([Buffer.from('mnop'), new BufferList([Buffer.from('qrstu'), Buffer.from('vwxyz')])])
+
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('consuming from multiple buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+
+  bl.consume(3)
+  t.equal(bl.length, 7)
+  t.equal(bl.slice(0, 7).toString('ascii'), 'defghij')
+
+  bl.consume(2)
+  t.equal(bl.length, 5)
+  t.equal(bl.slice(0, 5).toString('ascii'), 'fghij')
+
+  bl.consume(1)
+  t.equal(bl.length, 4)
+  t.equal(bl.slice(0, 4).toString('ascii'), 'ghij')
+
+  bl.consume(1)
+  t.equal(bl.length, 3)
+  t.equal(bl.slice(0, 3).toString('ascii'), 'hij')
+
+  bl.consume(2)
+  t.equal(bl.length, 1)
+  t.equal(bl.slice(0, 1).toString('ascii'), 'j')
+
+  t.end()
+})
+
+tape('complete consumption', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('a'))
+  bl.append(Buffer.from('b'))
+
+  bl.consume(2)
+
+  t.equal(bl.length, 0)
+  t.equal(bl._bufs.length, 0)
+
+  t.end()
+})
+
+tape('test readUInt8 / readInt8', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf1[0] = 0x1
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUInt8(), 0x1)
+  t.equal(bl.readUInt8(2), 0x3)
+  t.equal(bl.readInt8(2), 0x3)
+  t.equal(bl.readUInt8(3), 0x4)
+  t.equal(bl.readInt8(3), 0x4)
+  t.equal(bl.readUInt8(4), 0x23)
+  t.equal(bl.readInt8(4), 0x23)
+  t.equal(bl.readUInt8(5), 0x42)
+  t.equal(bl.readInt8(5), 0x42)
+
+  t.end()
+})
+
+tape('test readUInt16LE / readUInt16BE / readInt16LE / readInt16BE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf1[0] = 0x1
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUInt16BE(), 0x0100)
+  t.equal(bl.readUInt16LE(), 0x0001)
+  t.equal(bl.readUInt16BE(2), 0x0304)
+  t.equal(bl.readUInt16LE(2), 0x0403)
+  t.equal(bl.readInt16BE(2), 0x0304)
+  t.equal(bl.readInt16LE(2), 0x0403)
+  t.equal(bl.readUInt16BE(3), 0x0423)
+  t.equal(bl.readUInt16LE(3), 0x2304)
+  t.equal(bl.readInt16BE(3), 0x0423)
+  t.equal(bl.readInt16LE(3), 0x2304)
+  t.equal(bl.readUInt16BE(4), 0x2342)
+  t.equal(bl.readUInt16LE(4), 0x4223)
+  t.equal(bl.readInt16BE(4), 0x2342)
+  t.equal(bl.readInt16LE(4), 0x4223)
+
+  t.end()
+})
+
+tape('test readUInt32LE / readUInt32BE / readInt32LE / readInt32BE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf1[0] = 0x1
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUInt32BE(), 0x01000304)
+  t.equal(bl.readUInt32LE(), 0x04030001)
+  t.equal(bl.readUInt32BE(2), 0x03042342)
+  t.equal(bl.readUInt32LE(2), 0x42230403)
+  t.equal(bl.readInt32BE(2), 0x03042342)
+  t.equal(bl.readInt32LE(2), 0x42230403)
+
+  t.end()
+})
+
+tape('test readUIntLE / readUIntBE / readIntLE / readIntBE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf2[0] = 0x2
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+  buf3[2] = 0x61
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUIntBE(1, 1), 0x02)
+  t.equal(bl.readUIntBE(1, 2), 0x0203)
+  t.equal(bl.readUIntBE(1, 3), 0x020304)
+  t.equal(bl.readUIntBE(1, 4), 0x02030423)
+  t.equal(bl.readUIntBE(1, 5), 0x0203042342)
+  t.equal(bl.readUIntBE(1, 6), 0x020304234261)
+  t.equal(bl.readUIntLE(1, 1), 0x02)
+  t.equal(bl.readUIntLE(1, 2), 0x0302)
+  t.equal(bl.readUIntLE(1, 3), 0x040302)
+  t.equal(bl.readUIntLE(1, 4), 0x23040302)
+  t.equal(bl.readUIntLE(1, 5), 0x4223040302)
+  t.equal(bl.readUIntLE(1, 6), 0x614223040302)
+  t.equal(bl.readIntBE(1, 1), 0x02)
+  t.equal(bl.readIntBE(1, 2), 0x0203)
+  t.equal(bl.readIntBE(1, 3), 0x020304)
+  t.equal(bl.readIntBE(1, 4), 0x02030423)
+  t.equal(bl.readIntBE(1, 5), 0x0203042342)
+  t.equal(bl.readIntBE(1, 6), 0x020304234261)
+  t.equal(bl.readIntLE(1, 1), 0x02)
+  t.equal(bl.readIntLE(1, 2), 0x0302)
+  t.equal(bl.readIntLE(1, 3), 0x040302)
+  t.equal(bl.readIntLE(1, 4), 0x23040302)
+  t.equal(bl.readIntLE(1, 5), 0x4223040302)
+  t.equal(bl.readIntLE(1, 6), 0x614223040302)
+
+  t.end()
+})
+
+tape('test readFloatLE / readFloatBE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf1[0] = 0x01
+  buf2[1] = 0x00
+  buf2[2] = 0x00
+  buf3[0] = 0x80
+  buf3[1] = 0x3f
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  const canonical = Buffer.concat([buf1, buf2, buf3])
+  t.equal(bl.readFloatLE(), canonical.readFloatLE())
+  t.equal(bl.readFloatBE(), canonical.readFloatBE())
+  t.equal(bl.readFloatLE(2), canonical.readFloatLE(2))
+  t.equal(bl.readFloatBE(2), canonical.readFloatBE(2))
+
+  t.end()
+})
+
+tape('test readDoubleLE / readDoubleBE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(10)
+  const bl = new BufferList()
+
+  buf1[0] = 0x01
+  buf2[1] = 0x55
+  buf2[2] = 0x55
+  buf3[0] = 0x55
+  buf3[1] = 0x55
+  buf3[2] = 0x55
+  buf3[3] = 0x55
+  buf3[4] = 0xd5
+  buf3[5] = 0x3f
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  const canonical = Buffer.concat([buf1, buf2, buf3])
+  t.equal(bl.readDoubleBE(), canonical.readDoubleBE())
+  t.equal(bl.readDoubleLE(), canonical.readDoubleLE())
+  t.equal(bl.readDoubleBE(2), canonical.readDoubleBE(2))
+  t.equal(bl.readDoubleLE(2), canonical.readDoubleLE(2))
+
+  t.end()
+})
+
+tape('test toString', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.toString('ascii', 0, 10), 'abcdefghij')
+  t.equal(bl.toString('ascii', 3, 10), 'defghij')
+  t.equal(bl.toString('ascii', 3, 6), 'def')
+  t.equal(bl.toString('ascii', 3, 8), 'defgh')
+  t.equal(bl.toString('ascii', 5, 10), 'fghij')
+
+  t.end()
+})
+
+tape('test toString encoding', function (t) {
+  const bl = new BufferList()
+  const b = Buffer.from('abcdefghij\xff\x00')
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+  bl.append(Buffer.from('\xff\x00'))
+
+  encodings.forEach(function (enc) {
+    t.equal(bl.toString(enc), b.toString(enc), enc)
+  })
+
+  t.end()
+})
+
+tape('uninitialized memory', function (t) {
+  const secret = crypto.randomBytes(256)
+  for (let i = 0; i < 1e6; i++) {
+    const clone = Buffer.from(secret)
+    const bl = new BufferList()
+    bl.append(Buffer.from('a'))
+    bl.consume(-1024)
+    const buf = bl.slice(1)
+    if (buf.indexOf(clone) !== -1) {
+      t.fail(`Match (at ${i})`)
+      break
+    }
+  }
+  t.end()
+})
+
+!process.browser && tape('test stream', function (t) {
+  const random = crypto.randomBytes(65534)
+
+  const bl = new BufferList((err, buf) => {
+    t.ok(Buffer.isBuffer(buf))
+    t.ok(err === null)
+    t.ok(random.equals(bl.slice()))
+    t.ok(random.equals(buf.slice()))
+
+    bl.pipe(fs.createWriteStream('/tmp/bl_test_rnd_out.dat'))
+      .on('close', function () {
+        const rndhash = crypto.createHash('md5').update(random).digest('hex')
+        const md5sum = crypto.createHash('md5')
+        const s = fs.createReadStream('/tmp/bl_test_rnd_out.dat')
+
+        s.on('data', md5sum.update.bind(md5sum))
+        s.on('end', function () {
+          t.equal(rndhash, md5sum.digest('hex'), 'woohoo! correct hash!')
+          t.end()
+        })
+      })
+  })
+
+  fs.writeFileSync('/tmp/bl_test_rnd.dat', random)
+  fs.createReadStream('/tmp/bl_test_rnd.dat').pipe(bl)
+})
+
+tape('instantiation with Buffer', function (t) {
+  const buf = crypto.randomBytes(1024)
+  const buf2 = crypto.randomBytes(1024)
+  let b = BufferList(buf)
+
+  t.equal(buf.toString('hex'), b.slice().toString('hex'), 'same buffer')
+  b = BufferList([buf, buf2])
+  t.equal(b.slice().toString('hex'), Buffer.concat([buf, buf2]).toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('test String appendage', function (t) {
+  const bl = new BufferList()
+  const b = Buffer.from('abcdefghij\xff\x00')
+
+  bl.append('abcd')
+  bl.append('efg')
+  bl.append('hi')
+  bl.append('j')
+  bl.append('\xff\x00')
+
+  encodings.forEach(function (enc) {
+    t.equal(bl.toString(enc), b.toString(enc))
+  })
+
+  t.end()
+})
+
+tape('test Number appendage', function (t) {
+  const bl = new BufferList()
+  const b = Buffer.from('1234567890')
+
+  bl.append(1234)
+  bl.append(567)
+  bl.append(89)
+  bl.append(0)
+
+  encodings.forEach(function (enc) {
+    t.equal(bl.toString(enc), b.toString(enc))
+  })
+
+  t.end()
+})
+
+tape('write nothing, should get empty buffer', function (t) {
+  t.plan(3)
+  BufferList(function (err, data) {
+    t.notOk(err, 'no error')
+    t.ok(Buffer.isBuffer(data), 'got a buffer')
+    t.equal(0, data.length, 'got a zero-length buffer')
+    t.end()
+  }).end()
+})
+
+tape('unicode string', function (t) {
+  t.plan(2)
+
+  const inp1 = '\u2600'
+  const inp2 = '\u2603'
+  const exp = inp1 + ' and ' + inp2
+  const bl = BufferList()
+
+  bl.write(inp1)
+  bl.write(' and ')
+  bl.write(inp2)
+  t.equal(exp, bl.toString())
+  t.equal(Buffer.from(exp).toString('hex'), bl.toString('hex'))
+})
+
+tape('should emit finish', function (t) {
+  const source = BufferList()
+  const dest = BufferList()
+
+  source.write('hello')
+  source.pipe(dest)
+
+  dest.on('finish', function () {
+    t.equal(dest.toString('utf8'), 'hello')
+    t.end()
+  })
+})
+
+tape('basic copy', function (t) {
+  const buf = crypto.randomBytes(1024)
+  const buf2 = Buffer.alloc(1024)
+  const b = BufferList(buf)
+
+  b.copy(buf2)
+  t.equal(b.slice().toString('hex'), buf2.toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('copy after many appends', function (t) {
+  const buf = crypto.randomBytes(512)
+  const buf2 = Buffer.alloc(1024)
+  const b = BufferList(buf)
+
+  b.append(buf)
+  b.copy(buf2)
+  t.equal(b.slice().toString('hex'), buf2.toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('copy at a precise position', function (t) {
+  const buf = crypto.randomBytes(1004)
+  const buf2 = Buffer.alloc(1024)
+  const b = BufferList(buf)
+
+  b.copy(buf2, 20)
+  t.equal(b.slice().toString('hex'), buf2.slice(20).toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('copy starting from a precise location', function (t) {
+  const buf = crypto.randomBytes(10)
+  const buf2 = Buffer.alloc(5)
+  const b = BufferList(buf)
+
+  b.copy(buf2, 0, 5)
+  t.equal(b.slice(5).toString('hex'), buf2.toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('copy in an interval', function (t) {
+  const rnd = crypto.randomBytes(10)
+  const b = BufferList(rnd) // put the random bytes there
+  const actual = Buffer.alloc(3)
+  const expected = Buffer.alloc(3)
+
+  rnd.copy(expected, 0, 5, 8)
+  b.copy(actual, 0, 5, 8)
+
+  t.equal(actual.toString('hex'), expected.toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('copy an interval between two buffers', function (t) {
+  const buf = crypto.randomBytes(10)
+  const buf2 = Buffer.alloc(10)
+  const b = BufferList(buf)
+
+  b.append(buf)
+  b.copy(buf2, 0, 5, 15)
+
+  t.equal(b.slice(5, 15).toString('hex'), buf2.toString('hex'), 'same buffer')
+
+  t.end()
+})
+
+tape('shallow slice across buffer boundaries', function (t) {
+  const bl = new BufferList(['First', 'Second', 'Third'])
+
+  t.equal(bl.shallowSlice(3, 13).toString(), 'stSecondTh')
+
+  t.end()
+})
+
+tape('shallow slice within single buffer', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList(['First', 'Second', 'Third'])
+
+  t.equal(bl.shallowSlice(5, 10).toString(), 'Secon')
+  t.equal(bl.shallowSlice(7, 10).toString(), 'con')
+
+  t.end()
+})
+
+tape('shallow slice single buffer', function (t) {
+  t.plan(3)
+
+  const bl = new BufferList(['First', 'Second', 'Third'])
+
+  t.equal(bl.shallowSlice(0, 5).toString(), 'First')
+  t.equal(bl.shallowSlice(5, 11).toString(), 'Second')
+  t.equal(bl.shallowSlice(11, 16).toString(), 'Third')
+})
+
+tape('shallow slice with negative or omitted indices', function (t) {
+  t.plan(4)
+
+  const bl = new BufferList(['First', 'Second', 'Third'])
+
+  t.equal(bl.shallowSlice().toString(), 'FirstSecondThird')
+  t.equal(bl.shallowSlice(5).toString(), 'SecondThird')
+  t.equal(bl.shallowSlice(5, -3).toString(), 'SecondTh')
+  t.equal(bl.shallowSlice(-8).toString(), 'ondThird')
+})
+
+tape('shallow slice does not make a copy', function (t) {
+  t.plan(1)
+
+  const buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
+  const bl = (new BufferList(buffers)).shallowSlice(5, -3)
+
+  buffers[1].fill('h')
+  buffers[2].fill('h')
+
+  t.equal(bl.toString(), 'hhhhhhhh')
+})
+
+tape('shallow slice with 0 length', function (t) {
+  t.plan(1)
+
+  const buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
+  const bl = (new BufferList(buffers)).shallowSlice(0, 0)
+
+  t.equal(bl.length, 0)
+})
+
+tape('shallow slice with 0 length from middle', function (t) {
+  t.plan(1)
+
+  const buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
+  const bl = (new BufferList(buffers)).shallowSlice(10, 10)
+
+  t.equal(bl.length, 0)
+})
+
+tape('duplicate', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList('abcdefghij\xff\x00')
+  const dup = bl.duplicate()
+
+  t.equal(bl.prototype, dup.prototype)
+  t.equal(bl.toString('hex'), dup.toString('hex'))
+})
+
+tape('destroy no pipe', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList('alsdkfja;lsdkfja;lsdk')
+
+  bl.destroy()
+
+  t.equal(bl._bufs.length, 0)
+  t.equal(bl.length, 0)
+})
+
+tape('destroy with error', function (t) {
+  t.plan(3)
+
+  const bl = new BufferList('alsdkfja;lsdkfja;lsdk')
+  const err = new Error('kaboom')
+
+  bl.destroy(err)
+  bl.on('error', function (_err) {
+    t.equal(_err, err)
+  })
+
+  t.equal(bl._bufs.length, 0)
+  t.equal(bl.length, 0)
+})
+
+!process.browser && tape('destroy with pipe before read end', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList()
+  fs.createReadStream(path.join(__dirname, '/test.js'))
+    .pipe(bl)
+
+  bl.destroy()
+
+  t.equal(bl._bufs.length, 0)
+  t.equal(bl.length, 0)
+})
+
+!process.browser && tape('destroy with pipe before read end with race', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList()
+
+  fs.createReadStream(path.join(__dirname, '/test.js'))
+    .pipe(bl)
+
+  setTimeout(function () {
+    bl.destroy()
+    setTimeout(function () {
+      t.equal(bl._bufs.length, 0)
+      t.equal(bl.length, 0)
+    }, 500)
+  }, 500)
+})
+
+!process.browser && tape('destroy with pipe after read end', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList()
+
+  fs.createReadStream(path.join(__dirname, '/test.js'))
+    .on('end', onEnd)
+    .pipe(bl)
+
+  function onEnd () {
+    bl.destroy()
+
+    t.equal(bl._bufs.length, 0)
+    t.equal(bl.length, 0)
+  }
+})
+
+!process.browser && tape('destroy with pipe while writing to a destination', function (t) {
+  t.plan(4)
+
+  const bl = new BufferList()
+  const ds = new BufferList()
+
+  fs.createReadStream(path.join(__dirname, '/test.js'))
+    .on('end', onEnd)
+    .pipe(bl)
+
+  function onEnd () {
+    bl.pipe(ds)
+
+    setTimeout(function () {
+      bl.destroy()
+
+      t.equals(bl._bufs.length, 0)
+      t.equals(bl.length, 0)
+
+      ds.destroy()
+
+      t.equals(bl._bufs.length, 0)
+      t.equals(bl.length, 0)
+    }, 100)
+  }
+})
+
+!process.browser && tape('handle error', function (t) {
+  t.plan(2)
+
+  fs.createReadStream('/does/not/exist').pipe(BufferList(function (err, data) {
+    t.ok(err instanceof Error, 'has error')
+    t.notOk(data, 'no data')
+  }))
+})

backendia/node_modules/body-parser/LICENSE

@@ -0,0 +1,23 @@
+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

backendia/node_modules/body-parser/README.md

@@ -0,0 +1,494 @@
+# body-parser
+
+[![NPM Version][npm-version-image]][npm-url]
+[![NPM Downloads][npm-downloads-image]][npm-url]
+[![Build Status][ci-image]][ci-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+[![OpenSSF Scorecard Badge][ossf-scorecard-badge]][ossf-scorecard-visualizer]
+
+Node.js body parsing middleware.
+
+Parse incoming request bodies in a middleware before your handlers, available
+under the `req.body` property.
+
+**Note** As `req.body`'s shape is based on user-controlled input, all
+properties and values in this object are untrusted and should be validated
+before trusting. For example, `req.body.foo.toString()` may fail in multiple
+ways, for example the `foo` property may not be there or may not be a string,
+and `toString` may not be a function and instead a string or other user input.
+
+[Learn about the anatomy of an HTTP transaction in Node.js](https://nodejs.org/en/learn/http/anatomy-of-an-http-transaction).
+
+_This does not handle multipart bodies_, due to their complex and typically
+large nature. For multipart bodies, you may be interested in the following
+modules:
+
+  * [busboy](https://www.npmjs.com/package/busboy#readme) and
+    [connect-busboy](https://www.npmjs.com/package/connect-busboy#readme)
+  * [multiparty](https://www.npmjs.com/package/multiparty#readme) and
+    [connect-multiparty](https://www.npmjs.com/package/connect-multiparty#readme)
+  * [formidable](https://www.npmjs.com/package/formidable#readme)
+  * [multer](https://www.npmjs.com/package/multer#readme)
+
+This module provides the following parsers:
+
+  * [JSON body parser](#bodyparserjsonoptions)
+  * [Raw body parser](#bodyparserrawoptions)
+  * [Text body parser](#bodyparsertextoptions)
+  * [URL-encoded form body parser](#bodyparserurlencodedoptions)
+
+Other body parsers you might be interested in:
+
+- [body](https://www.npmjs.com/package/body#readme)
+- [co-body](https://www.npmjs.com/package/co-body#readme)
+
+## Installation
+
+```sh
+$ npm install body-parser
+```
+
+## API
+
+```js
+const bodyParser = require('body-parser')
+```
+
+The `bodyParser` object exposes various factories to create middlewares. All
+middlewares will populate the `req.body` property with the parsed body when
+the `Content-Type` request header matches the `type` option.
+
+The various errors returned by this module are described in the
+[errors section](#errors).
+
+### bodyParser.json([options])
+
+Returns middleware that only parses `json` and only looks at requests where
+the `Content-Type` header matches the `type` option. This parser accepts any
+Unicode encoding of the body and supports automatic inflation of `gzip`,
+`br` (brotli) and `deflate` encodings.
+
+A new `body` object containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`).
+
+#### Options
+
+The `json` function takes an optional `options` object that may contain any of
+the following keys:
+
+##### defaultCharset
+
+Specify the default character set for the json content if the charset is not
+specified in the `Content-Type` header of the request. Defaults to `utf-8`.
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### reviver
+
+The `reviver` option is passed directly to `JSON.parse` as the second
+argument. You can find more information on this argument
+[in the MDN documentation about JSON.parse](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Example.3A_Using_the_reviver_parameter).
+
+##### strict
+
+When set to `true`, will only accept arrays and objects; when `false` will
+accept anything `JSON.parse` accepts. Defaults to `true`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function. If not a
+function, `type` option is passed directly to the
+[type-is](https://www.npmjs.com/package/type-is#readme) library and this can
+be an extension name (like `json`), a mime type (like `application/json`), or
+a mime type with a wildcard (like `*/*` or `*/json`). If a function, the `type`
+option is called as `fn(req)` and the request is parsed if it returns a truthy
+value. Defaults to `application/json`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+### bodyParser.raw([options])
+
+Returns middleware that parses all bodies as a `Buffer` and only looks at
+requests where the `Content-Type` header matches the `type` option. This
+parser supports automatic inflation of `gzip`, `br` (brotli) and `deflate`
+encodings.
+
+A new `body` object containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`). This will be a `Buffer` object
+of the body.
+
+#### Options
+
+The `raw` function takes an optional `options` object that may contain any of
+the following keys:
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function.
+If not a function, `type` option is passed directly to the
+[type-is](https://www.npmjs.com/package/type-is#readme) library and this
+can be an extension name (like `bin`), a mime type (like
+`application/octet-stream`), or a mime type with a wildcard (like `*/*` or
+`application/*`). If a function, the `type` option is called as `fn(req)`
+and the request is parsed if it returns a truthy value. Defaults to
+`application/octet-stream`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+### bodyParser.text([options])
+
+Returns middleware that parses all bodies as a string and only looks at
+requests where the `Content-Type` header matches the `type` option. This
+parser supports automatic inflation of `gzip`, `br` (brotli) and `deflate`
+encodings.
+
+A new `body` string containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`). This will be a string of the
+body.
+
+#### Options
+
+The `text` function takes an optional `options` object that may contain any of
+the following keys:
+
+##### defaultCharset
+
+Specify the default character set for the text content if the charset is not
+specified in the `Content-Type` header of the request. Defaults to `utf-8`.
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function. If not
+a function, `type` option is passed directly to the
+[type-is](https://www.npmjs.com/package/type-is#readme) library and this can
+be an extension name (like `txt`), a mime type (like `text/plain`), or a mime
+type with a wildcard (like `*/*` or `text/*`). If a function, the `type`
+option is called as `fn(req)` and the request is parsed if it returns a
+truthy value. Defaults to `text/plain`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+### bodyParser.urlencoded([options])
+
+Returns middleware that only parses `urlencoded` bodies and only looks at
+requests where the `Content-Type` header matches the `type` option. This
+parser accepts only UTF-8 and ISO-8859-1 encodings of the body and supports 
+automatic inflation of `gzip`, `br` (brotli) and `deflate` encodings.
+
+A new `body` object containing the parsed data is populated on the `request`
+object after the middleware (i.e. `req.body`). This object will contain
+key-value pairs, where the value can be a string or array (when `extended` is
+`false`), or any type (when `extended` is `true`).
+
+#### Options
+
+The `urlencoded` function takes an optional `options` object that may contain
+any of the following keys:
+
+##### extended
+
+The "extended" syntax allows for rich objects and arrays to be encoded into the
+URL-encoded format, allowing for a JSON-like experience with URL-encoded. For
+more information, please [see the qs
+library](https://www.npmjs.com/package/qs#readme).
+
+Defaults to `false`.
+
+##### inflate
+
+When set to `true`, then deflated (compressed) bodies will be inflated; when
+`false`, deflated bodies are rejected. Defaults to `true`.
+
+##### limit
+
+Controls the maximum request body size. If this is a number, then the value
+specifies the number of bytes; if it is a string, the value is passed to the
+[bytes](https://www.npmjs.com/package/bytes) library for parsing. Defaults
+to `'100kb'`.
+
+##### parameterLimit
+
+The `parameterLimit` option controls the maximum number of parameters that
+are allowed in the URL-encoded data. If a request contains more parameters
+than this value, a 413 will be returned to the client. Defaults to `1000`.
+
+##### type
+
+The `type` option is used to determine what media type the middleware will
+parse. This option can be a string, array of strings, or a function. If not
+a function, `type` option is passed directly to the
+[type-is](https://www.npmjs.com/package/type-is#readme) library and this can
+be an extension name (like `urlencoded`), a mime type (like
+`application/x-www-form-urlencoded`), or a mime type with a wildcard (like
+`*/x-www-form-urlencoded`). If a function, the `type` option is called as
+`fn(req)` and the request is parsed if it returns a truthy value. Defaults
+to `application/x-www-form-urlencoded`.
+
+##### verify
+
+The `verify` option, if supplied, is called as `verify(req, res, buf, encoding)`,
+where `buf` is a `Buffer` of the raw request body and `encoding` is the
+encoding of the request. The parsing can be aborted by throwing an error.
+
+##### defaultCharset
+
+The default charset to parse as, if not specified in content-type. Must be
+either `utf-8` or `iso-8859-1`. Defaults to `utf-8`.
+
+##### charsetSentinel
+
+Whether to let the value of the `utf8` parameter take precedence as the charset
+selector. It requires the form to contain a parameter named `utf8` with a value
+of `✓`. Defaults to `false`.
+
+##### interpretNumericEntities
+
+Whether to decode numeric entities such as `☺` when parsing an iso-8859-1
+form. Defaults to `false`.
+
+
+##### depth
+
+The `depth` option is used to configure the maximum depth of the `qs` library when `extended` is `true`. This allows you to limit the amount of keys that are parsed and can be useful to prevent certain types of abuse. Defaults to `32`. It is recommended to keep this value as low as possible.
+
+## Errors
+
+The middlewares provided by this module create errors using the
+[`http-errors` module](https://www.npmjs.com/package/http-errors). The errors
+will typically have a `status`/`statusCode` property that contains the suggested
+HTTP response code, an `expose` property to determine if the `message` property
+should be displayed to the client, a `type` property to determine the type of
+error without matching against the `message`, and a `body` property containing
+the read body, if available.
+
+The following are the common errors created, though any error can come through
+for various reasons.
+
+### content encoding unsupported
+
+This error will occur when the request had a `Content-Encoding` header that
+contained an encoding but the "inflation" option was set to `false`. The
+`status` property is set to `415`, the `type` property is set to
+`'encoding.unsupported'`, and the `charset` property will be set to the
+encoding that is unsupported.
+
+### entity parse failed
+
+This error will occur when the request contained an entity that could not be
+parsed by the middleware. The `status` property is set to `400`, the `type`
+property is set to `'entity.parse.failed'`, and the `body` property is set to
+the entity value that failed parsing.
+
+### entity verify failed
+
+This error will occur when the request contained an entity that could not be
+failed verification by the defined `verify` option. The `status` property is
+set to `403`, the `type` property is set to `'entity.verify.failed'`, and the
+`body` property is set to the entity value that failed verification.
+
+### request aborted
+
+This error will occur when the request is aborted by the client before reading
+the body has finished. The `received` property will be set to the number of
+bytes received before the request was aborted and the `expected` property is
+set to the number of expected bytes. The `status` property is set to `400`
+and `type` property is set to `'request.aborted'`.
+
+### request entity too large
+
+This error will occur when the request body's size is larger than the "limit"
+option. The `limit` property will be set to the byte limit and the `length`
+property will be set to the request body's length. The `status` property is
+set to `413` and the `type` property is set to `'entity.too.large'`.
+
+### request size did not match content length
+
+This error will occur when the request's length did not match the length from
+the `Content-Length` header. This typically occurs when the request is malformed,
+typically when the `Content-Length` header was calculated based on characters
+instead of bytes. The `status` property is set to `400` and the `type` property
+is set to `'request.size.invalid'`.
+
+### stream encoding should not be set
+
+This error will occur when something called the `req.setEncoding` method prior
+to this middleware. This module operates directly on bytes only and you cannot
+call `req.setEncoding` when using this module. The `status` property is set to
+`500` and the `type` property is set to `'stream.encoding.set'`.
+
+### stream is not readable
+
+This error will occur when the request is no longer readable when this middleware
+attempts to read it. This typically means something other than a middleware from
+this module read the request body already and the middleware was also configured to
+read the same request. The `status` property is set to `500` and the `type`
+property is set to `'stream.not.readable'`.
+
+### too many parameters
+
+This error will occur when the content of the request exceeds the configured
+`parameterLimit` for the `urlencoded` parser. The `status` property is set to
+`413` and the `type` property is set to `'parameters.too.many'`.
+
+### unsupported charset "BOGUS"
+
+This error will occur when the request had a charset parameter in the
+`Content-Type` header, but the `iconv-lite` module does not support it OR the
+parser does not support it. The charset is contained in the message as well
+as in the `charset` property. The `status` property is set to `415`, the
+`type` property is set to `'charset.unsupported'`, and the `charset` property
+is set to the charset that is unsupported.
+
+### unsupported content encoding "bogus"
+
+This error will occur when the request had a `Content-Encoding` header that
+contained an unsupported encoding. The encoding is contained in the message
+as well as in the `encoding` property. The `status` property is set to `415`,
+the `type` property is set to `'encoding.unsupported'`, and the `encoding`
+property is set to the encoding that is unsupported.
+
+### The input exceeded the depth
+
+This error occurs when using `bodyParser.urlencoded` with the `extended` property set to `true` and the input exceeds the configured `depth` option. The `status` property is set to `400`. It is recommended to review the `depth` option and evaluate if it requires a higher value. When the `depth` option is set to `32` (default value), the error will not be thrown.
+
+## Examples
+
+### Express/Connect top-level generic
+
+This example demonstrates adding a generic JSON and URL-encoded parser as a
+top-level middleware, which will parse the bodies of all incoming requests.
+This is the simplest setup.
+
+```js
+const express = require('express')
+const bodyParser = require('body-parser')
+
+const app = express()
+
+// parse application/x-www-form-urlencoded
+app.use(bodyParser.urlencoded())
+
+// parse application/json
+app.use(bodyParser.json())
+
+app.use(function (req, res) {
+  res.setHeader('Content-Type', 'text/plain')
+  res.write('you posted:\n')
+  res.end(String(JSON.stringify(req.body, null, 2)))
+})
+```
+
+### Express route-specific
+
+This example demonstrates adding body parsers specifically to the routes that
+need them. In general, this is the most recommended way to use body-parser with
+Express.
+
+```js
+const express = require('express')
+const bodyParser = require('body-parser')
+
+const app = express()
+
+// create application/json parser
+const jsonParser = bodyParser.json()
+
+// create application/x-www-form-urlencoded parser
+const urlencodedParser = bodyParser.urlencoded()
+
+// POST /login gets urlencoded bodies
+app.post('/login', urlencodedParser, function (req, res) {
+  if (!req.body || !req.body.username) res.sendStatus(400)
+  res.send('welcome, ' + req.body.username)
+})
+
+// POST /api/users gets JSON bodies
+app.post('/api/users', jsonParser, function (req, res) {
+  if (!req.body) res.sendStatus(400)
+  // create user in req.body
+})
+```
+
+### Change accepted type for parsers
+
+All the parsers accept a `type` option which allows you to change the
+`Content-Type` that the middleware will parse.
+
+```js
+const express = require('express')
+const bodyParser = require('body-parser')
+
+const app = express()
+
+// parse various different custom JSON types as JSON
+app.use(bodyParser.json({ type: 'application/*+json' }))
+
+// parse some custom thing into a Buffer
+app.use(bodyParser.raw({ type: 'application/vnd.custom-type' }))
+
+// parse an HTML body into a string
+app.use(bodyParser.text({ type: 'text/html' }))
+```
+
+## License
+
+[MIT](LICENSE)
+
+[ci-image]: https://img.shields.io/github/actions/workflow/status/expressjs/body-parser/ci.yml?branch=master&label=ci
+[ci-url]: https://github.com/expressjs/body-parser/actions/workflows/ci.yml
+[coveralls-image]: https://img.shields.io/coverallsCoverage/github/expressjs/body-parser?branch=master
+[coveralls-url]: https://coveralls.io/r/expressjs/body-parser?branch=master
+[npm-downloads-image]: https://img.shields.io/npm/dm/body-parser
+[npm-url]: https://npmjs.com/package/body-parser
+[npm-version-image]: https://img.shields.io/npm/v/body-parser
+[ossf-scorecard-badge]: https://api.scorecard.dev/projects/github.com/expressjs/body-parser/badge
+[ossf-scorecard-visualizer]: https://ossf.github.io/scorecard-visualizer/#/projects/github.com/expressjs/body-parser

backendia/node_modules/body-parser/index.js

@@ -0,0 +1,71 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * @typedef {Object} Parsers
+ * @property {Function} json JSON parser
+ * @property {Function} raw Raw parser
+ * @property {Function} text Text parser
+ * @property {Function} urlencoded URL-encoded parser
+ */
+
+/**
+ * Module exports.
+ * @type {Function & Parsers}
+ */
+exports = module.exports = bodyParser
+
+/**
+ * JSON parser.
+ * @public
+ */
+Object.defineProperty(exports, 'json', {
+  configurable: true,
+  enumerable: true,
+  get: () => require('./lib/types/json')
+})
+
+/**
+ * Raw parser.
+ * @public
+ */
+Object.defineProperty(exports, 'raw', {
+  configurable: true,
+  enumerable: true,
+  get: () => require('./lib/types/raw')
+})
+
+/**
+ * Text parser.
+ * @public
+ */
+Object.defineProperty(exports, 'text', {
+  configurable: true,
+  enumerable: true,
+  get: () => require('./lib/types/text')
+})
+
+/**
+ * URL-encoded parser.
+ * @public
+ */
+Object.defineProperty(exports, 'urlencoded', {
+  configurable: true,
+  enumerable: true,
+  get: () => require('./lib/types/urlencoded')
+})
+
+/**
+ * Create a middleware to parse json and urlencoded bodies.
+ *
+ * @deprecated
+ * @public
+ */
+function bodyParser () {
+  throw new Error('The bodyParser() generic has been split into individual middleware to use instead.')
+}

backendia/node_modules/body-parser/lib/read.js

@@ -0,0 +1,247 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var createError = require('http-errors')
+var getBody = require('raw-body')
+var iconv = require('iconv-lite')
+var onFinished = require('on-finished')
+var zlib = require('node:zlib')
+var hasBody = require('type-is').hasBody
+var { getCharset } = require('./utils')
+
+/**
+ * Module exports.
+ */
+
+module.exports = read
+
+/**
+ * Read a request into a buffer and parse.
+ *
+ * @param {Object} req
+ * @param {Object} res
+ * @param {Function} next
+ * @param {Function} parse
+ * @param {Function} debug
+ * @param {Object} options
+ * @private
+ */
+function read (req, res, next, parse, debug, options) {
+  if (onFinished.isFinished(req)) {
+    debug('body already parsed')
+    next()
+    return
+  }
+
+  if (!('body' in req)) {
+    req.body = undefined
+  }
+
+  // skip requests without bodies
+  if (!hasBody(req)) {
+    debug('skip empty body')
+    next()
+    return
+  }
+
+  debug('content-type %j', req.headers['content-type'])
+
+  // determine if request should be parsed
+  if (!options.shouldParse(req)) {
+    debug('skip parsing')
+    next()
+    return
+  }
+
+  var encoding = null
+  if (options?.skipCharset !== true) {
+    encoding = getCharset(req) || options.defaultCharset
+
+    // validate charset
+    if (!!options?.isValidCharset && !options.isValidCharset(encoding)) {
+      debug('invalid charset')
+      next(createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
+        charset: encoding,
+        type: 'charset.unsupported'
+      }))
+      return
+    }
+  }
+
+  var length
+  var opts = options
+  var stream
+
+  // read options
+  var verify = opts.verify
+
+  try {
+    // get the content stream
+    stream = contentstream(req, debug, opts.inflate)
+    length = stream.length
+    stream.length = undefined
+  } catch (err) {
+    return next(err)
+  }
+
+  // set raw-body options
+  opts.length = length
+  opts.encoding = verify
+    ? null
+    : encoding
+
+  // assert charset is supported
+  if (opts.encoding === null && encoding !== null && !iconv.encodingExists(encoding)) {
+    return next(createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
+      charset: encoding.toLowerCase(),
+      type: 'charset.unsupported'
+    }))
+  }
+
+  // read body
+  debug('read body')
+  getBody(stream, opts, function (error, body) {
+    if (error) {
+      var _error
+
+      if (error.type === 'encoding.unsupported') {
+        // echo back charset
+        _error = createError(415, 'unsupported charset "' + encoding.toUpperCase() + '"', {
+          charset: encoding.toLowerCase(),
+          type: 'charset.unsupported'
+        })
+      } else {
+        // set status code on error
+        _error = createError(400, error)
+      }
+
+      // unpipe from stream and destroy
+      if (stream !== req) {
+        req.unpipe()
+        stream.destroy()
+      }
+
+      // read off entire request
+      dump(req, function onfinished () {
+        next(createError(400, _error))
+      })
+      return
+    }
+
+    // verify
+    if (verify) {
+      try {
+        debug('verify body')
+        verify(req, res, body, encoding)
+      } catch (err) {
+        next(createError(403, err, {
+          body: body,
+          type: err.type || 'entity.verify.failed'
+        }))
+        return
+      }
+    }
+
+    // parse
+    var str = body
+    try {
+      debug('parse body')
+      str = typeof body !== 'string' && encoding !== null
+        ? iconv.decode(body, encoding)
+        : body
+      req.body = parse(str, encoding)
+    } catch (err) {
+      next(createError(400, err, {
+        body: str,
+        type: err.type || 'entity.parse.failed'
+      }))
+      return
+    }
+
+    next()
+  })
+}
+
+/**
+ * Get the content stream of the request.
+ *
+ * @param {Object} req
+ * @param {Function} debug
+ * @param {boolean} inflate
+ * @returns {Object}
+ * @private
+ */
+function contentstream (req, debug, inflate) {
+  var encoding = (req.headers['content-encoding'] || 'identity').toLowerCase()
+  var length = req.headers['content-length']
+
+  debug('content-encoding "%s"', encoding)
+
+  if (inflate === false && encoding !== 'identity') {
+    throw createError(415, 'content encoding unsupported', {
+      encoding: encoding,
+      type: 'encoding.unsupported'
+    })
+  }
+
+  if (encoding === 'identity') {
+    req.length = length
+    return req
+  }
+
+  var stream = createDecompressionStream(encoding, debug)
+  req.pipe(stream)
+  return stream
+}
+
+/**
+ * Create a decompression stream for the given encoding.
+ * @param {string} encoding
+ * @param {Function} debug
+ * @returns {Object}
+ * @private
+ */
+function createDecompressionStream (encoding, debug) {
+  switch (encoding) {
+    case 'deflate':
+      debug('inflate body')
+      return zlib.createInflate()
+    case 'gzip':
+      debug('gunzip body')
+      return zlib.createGunzip()
+    case 'br':
+      debug('brotli decompress body')
+      return zlib.createBrotliDecompress()
+    default:
+      throw createError(415, 'unsupported content encoding "' + encoding + '"', {
+        encoding: encoding,
+        type: 'encoding.unsupported'
+      })
+  }
+}
+
+/**
+ * Dump the contents of a request.
+ *
+ * @param {Object} req
+ * @param {Function} callback
+ * @private
+ */
+function dump (req, callback) {
+  if (onFinished.isFinished(req)) {
+    callback(null)
+  } else {
+    onFinished(req, callback)
+    req.resume()
+  }
+}

backendia/node_modules/body-parser/lib/types/json.js

@@ -0,0 +1,158 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var debug = require('debug')('body-parser:json')
+var read = require('../read')
+var { normalizeOptions } = require('../utils')
+
+/**
+ * Module exports.
+ */
+
+module.exports = json
+
+/**
+ * RegExp to match the first non-space in a string.
+ *
+ * Allowed whitespace is defined in RFC 7159:
+ *
+ *    ws = *(
+ *            %x20 /              ; Space
+ *            %x09 /              ; Horizontal tab
+ *            %x0A /              ; Line feed or New line
+ *            %x0D )              ; Carriage return
+ */
+var FIRST_CHAR_REGEXP = /^[\x20\x09\x0a\x0d]*([^\x20\x09\x0a\x0d])/ // eslint-disable-line no-control-regex
+
+var JSON_SYNTAX_CHAR = '#'
+var JSON_SYNTAX_REGEXP = /#+/g
+
+/**
+ * Create a middleware to parse JSON bodies.
+ *
+ * @param {Object} [options]
+ * @returns {Function}
+ * @public
+ */
+function json (options) {
+  const normalizedOptions = normalizeOptions(options, 'application/json')
+
+  var reviver = options?.reviver
+  var strict = options?.strict !== false
+
+  function parse (body) {
+    if (body.length === 0) {
+      // special-case empty json body, as it's a common client-side mistake
+      // TODO: maybe make this configurable or part of "strict" option
+      return {}
+    }
+
+    if (strict) {
+      var first = firstchar(body)
+
+      if (first !== '{' && first !== '[') {
+        debug('strict violation')
+        throw createStrictSyntaxError(body, first)
+      }
+    }
+
+    try {
+      debug('parse json')
+      return JSON.parse(body, reviver)
+    } catch (e) {
+      throw normalizeJsonSyntaxError(e, {
+        message: e.message,
+        stack: e.stack
+      })
+    }
+  }
+
+  const readOptions = {
+    ...normalizedOptions,
+    // assert charset per RFC 7159 sec 8.1
+    isValidCharset: (charset) => charset.slice(0, 4) === 'utf-'
+  }
+
+  return function jsonParser (req, res, next) {
+    read(req, res, next, parse, debug, readOptions)
+  }
+}
+
+/**
+ * Create strict violation syntax error matching native error.
+ *
+ * @param {string} str
+ * @param {string} char
+ * @returns {Error}
+ * @private
+ */
+function createStrictSyntaxError (str, char) {
+  var index = str.indexOf(char)
+  var partial = ''
+
+  if (index !== -1) {
+    partial = str.substring(0, index) + JSON_SYNTAX_CHAR.repeat(str.length - index)
+  }
+
+  try {
+    JSON.parse(partial); /* istanbul ignore next */ throw new SyntaxError('strict violation')
+  } catch (e) {
+    return normalizeJsonSyntaxError(e, {
+      message: e.message.replace(JSON_SYNTAX_REGEXP, function (placeholder) {
+        return str.substring(index, index + placeholder.length)
+      }),
+      stack: e.stack
+    })
+  }
+}
+
+/**
+ * Get the first non-whitespace character in a string.
+ *
+ * @param {string} str
+ * @returns {string|undefined}
+ * @private
+ */
+function firstchar (str) {
+  var match = FIRST_CHAR_REGEXP.exec(str)
+
+  return match
+    ? match[1]
+    : undefined
+}
+
+/**
+ * Normalize a SyntaxError for JSON.parse.
+ *
+ * @param {SyntaxError} error
+ * @param {Object} obj
+ * @returns {SyntaxError}
+ * @private
+ */
+function normalizeJsonSyntaxError (error, obj) {
+  var keys = Object.getOwnPropertyNames(error)
+
+  for (var i = 0; i < keys.length; i++) {
+    var key = keys[i]
+    if (key !== 'stack' && key !== 'message') {
+      delete error[key]
+    }
+  }
+
+  // replace stack before message for Node.js 0.10 and below
+  error.stack = obj.stack.replace(error.message, obj.message)
+  error.message = obj.message
+
+  return error
+}

backendia/node_modules/body-parser/lib/types/raw.js

@@ -0,0 +1,42 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ */
+
+var debug = require('debug')('body-parser:raw')
+var read = require('../read')
+var { normalizeOptions, passthrough } = require('../utils')
+
+/**
+ * Module exports.
+ */
+
+module.exports = raw
+
+/**
+ * Create a middleware to parse raw bodies.
+ *
+ * @param {Object} [options]
+ * @returns {Function}
+ * @public
+ */
+function raw (options) {
+  const normalizedOptions = normalizeOptions(options, 'application/octet-stream')
+
+  const readOptions = {
+    ...normalizedOptions,
+    // Skip charset validation and parse the body as is
+    skipCharset: true
+  }
+
+  return function rawParser (req, res, next) {
+    read(req, res, next, passthrough, debug, readOptions)
+  }
+}

backendia/node_modules/body-parser/lib/types/text.js

@@ -0,0 +1,36 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ */
+
+var debug = require('debug')('body-parser:text')
+var read = require('../read')
+var { normalizeOptions, passthrough } = require('../utils')
+
+/**
+ * Module exports.
+ */
+
+module.exports = text
+
+/**
+ * Create a middleware to parse text bodies.
+ *
+ * @param {Object} [options]
+ * @returns {Function}
+ * @public
+ */
+function text (options) {
+  const normalizedOptions = normalizeOptions(options, 'text/plain')
+
+  return function textParser (req, res, next) {
+    read(req, res, next, passthrough, debug, normalizedOptions)
+  }
+}

backendia/node_modules/body-parser/lib/types/urlencoded.js

@@ -0,0 +1,142 @@
+/*!
+ * body-parser
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var createError = require('http-errors')
+var debug = require('debug')('body-parser:urlencoded')
+var read = require('../read')
+var qs = require('qs')
+var { normalizeOptions } = require('../utils')
+
+/**
+ * Module exports.
+ */
+
+module.exports = urlencoded
+
+/**
+ * Create a middleware to parse urlencoded bodies.
+ *
+ * @param {Object} [options]
+ * @returns {Function}
+ * @public
+ */
+function urlencoded (options) {
+  const normalizedOptions = normalizeOptions(options, 'application/x-www-form-urlencoded')
+
+  if (normalizedOptions.defaultCharset !== 'utf-8' && normalizedOptions.defaultCharset !== 'iso-8859-1') {
+    throw new TypeError('option defaultCharset must be either utf-8 or iso-8859-1')
+  }
+
+  // create the appropriate query parser
+  var queryparse = createQueryParser(options)
+
+  function parse (body, encoding) {
+    return body.length
+      ? queryparse(body, encoding)
+      : {}
+  }
+
+  const readOptions = {
+    ...normalizedOptions,
+    // assert charset
+    isValidCharset: (charset) => charset === 'utf-8' || charset === 'iso-8859-1'
+  }
+
+  return function urlencodedParser (req, res, next) {
+    read(req, res, next, parse, debug, readOptions)
+  }
+}
+
+/**
+ * Get the extended query parser.
+ *
+ * @param {Object} options
+ * @returns {Function}
+ * @private
+ */
+function createQueryParser (options) {
+  var extended = Boolean(options?.extended)
+  var parameterLimit = options?.parameterLimit !== undefined
+    ? options?.parameterLimit
+    : 1000
+  var charsetSentinel = options?.charsetSentinel
+  var interpretNumericEntities = options?.interpretNumericEntities
+  var depth = extended ? (options?.depth !== undefined ? options?.depth : 32) : 0
+
+  if (isNaN(parameterLimit) || parameterLimit < 1) {
+    throw new TypeError('option parameterLimit must be a positive number')
+  }
+
+  if (isNaN(depth) || depth < 0) {
+    throw new TypeError('option depth must be a zero or a positive number')
+  }
+
+  if (isFinite(parameterLimit)) {
+    parameterLimit = parameterLimit | 0
+  }
+
+  return function queryparse (body, encoding) {
+    var paramCount = parameterCount(body, parameterLimit)
+
+    if (paramCount === undefined) {
+      debug('too many parameters')
+      throw createError(413, 'too many parameters', {
+        type: 'parameters.too.many'
+      })
+    }
+
+    var arrayLimit = extended ? Math.max(100, paramCount) : paramCount
+
+    debug('parse ' + (extended ? 'extended ' : '') + 'urlencoding')
+    try {
+      return qs.parse(body, {
+        allowPrototypes: true,
+        arrayLimit: arrayLimit,
+        depth: depth,
+        charsetSentinel: charsetSentinel,
+        interpretNumericEntities: interpretNumericEntities,
+        charset: encoding,
+        parameterLimit: parameterLimit,
+        strictDepth: true
+      })
+    } catch (err) {
+      if (err instanceof RangeError) {
+        throw createError(400, 'The input exceeded the depth', {
+          type: 'querystring.parse.rangeError'
+        })
+      } else {
+        throw err
+      }
+    }
+  }
+}
+
+/**
+ * Count the number of parameters, stopping once limit reached
+ *
+ * @param {string} body
+ * @param {number} limit
+ * @returns {number|undefined} Returns undefined if limit exceeded
+ * @private
+ */
+function parameterCount (body, limit) {
+  let count = 0
+  let index = -1
+  do {
+    count++
+    if (count > limit) return undefined // Early exit if limit exceeded
+    index = body.indexOf('&', index + 1)
+  } while (index !== -1)
+  return count
+}

backendia/node_modules/body-parser/lib/utils.js

@@ -0,0 +1,98 @@
+'use strict'
+
+/**
+ * Module dependencies.
+ */
+
+var bytes = require('bytes')
+var contentType = require('content-type')
+var typeis = require('type-is')
+
+/**
+ * Module exports.
+ */
+module.exports = {
+  getCharset,
+  normalizeOptions,
+  passthrough
+}
+
+/**
+ * Get the charset of a request.
+ *
+ * @param {Object} req
+ * @returns {string | undefined}
+ * @private
+ */
+function getCharset (req) {
+  try {
+    return (contentType.parse(req).parameters.charset || '').toLowerCase()
+  } catch {
+    return undefined
+  }
+}
+
+/**
+ * Get the simple type checker.
+ *
+ * @param {string | string[]} type
+ * @returns {Function}
+ * @private
+ */
+function typeChecker (type) {
+  return function checkType (req) {
+    return Boolean(typeis(req, type))
+  }
+}
+
+/**
+ * Normalizes the common options for all parsers.
+ *
+ * @param {Object} options options to normalize
+ * @param {string | string[] | Function} defaultType default content type(s) or a function to determine it
+ * @returns {Object}
+ * @private
+ */
+function normalizeOptions (options, defaultType) {
+  if (!defaultType) {
+    // Parsers must define a default content type
+    throw new TypeError('defaultType must be provided')
+  }
+
+  var inflate = options?.inflate !== false
+  var limit = typeof options?.limit !== 'number'
+    ? bytes.parse(options?.limit || '100kb')
+    : options?.limit
+  var type = options?.type || defaultType
+  var verify = options?.verify || false
+  var defaultCharset = options?.defaultCharset || 'utf-8'
+
+  if (verify !== false && typeof verify !== 'function') {
+    throw new TypeError('option verify must be function')
+  }
+
+  // create the appropriate type checking function
+  var shouldParse = typeof type !== 'function'
+    ? typeChecker(type)
+    : type
+
+  return {
+    inflate,
+    limit,
+    verify,
+    defaultCharset,
+    shouldParse
+  }
+}
+
+/**
+ * Passthrough function that returns input unchanged.
+ * Used by parsers that don't need to transform the data.
+ *
+ * @param {*} value
+ * @returns {*}
+ * @private
+ */
+function passthrough (value) {
+  return value
+}

backendia/node_modules/body-parser/package.json

@@ -0,0 +1,52 @@
+{
+  "name": "body-parser",
+  "description": "Node.js body parsing middleware",
+  "version": "2.2.2",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
+  ],
+  "license": "MIT",
+  "repository": "expressjs/body-parser",
+  "funding": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/express"
+  },
+  "dependencies": {
+    "bytes": "^3.1.2",
+    "content-type": "^1.0.5",
+    "debug": "^4.4.3",
+    "http-errors": "^2.0.0",
+    "iconv-lite": "^0.7.0",
+    "on-finished": "^2.4.1",
+    "qs": "^6.14.1",
+    "raw-body": "^3.0.1",
+    "type-is": "^2.0.1"
+  },
+  "devDependencies": {
+    "eslint": "^8.57.1",
+    "eslint-config-standard": "^14.1.1",
+    "eslint-plugin-import": "^2.31.0",
+    "eslint-plugin-markdown": "^3.0.1",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-promise": "^6.6.0",
+    "eslint-plugin-standard": "^4.1.0",
+    "mocha": "^11.1.0",
+    "nyc": "^17.1.0",
+    "supertest": "^7.0.0"
+  },
+  "files": [
+    "lib/",
+    "LICENSE",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">=18"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "test": "mocha --reporter spec --check-leaks test/",
+    "test-ci": "nyc --reporter=lcovonly --reporter=text npm test",
+    "test-cov": "nyc --reporter=html --reporter=text npm test"
+  }
+}

backendia/node_modules/buffer-from/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016, 2018 Linus Unnebäck
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

backendia/node_modules/buffer-from/index.js

@@ -0,0 +1,72 @@
+/* eslint-disable node/no-deprecated-api */
+
+var toString = Object.prototype.toString
+
+var isModern = (
+  typeof Buffer !== 'undefined' &&
+  typeof Buffer.alloc === 'function' &&
+  typeof Buffer.allocUnsafe === 'function' &&
+  typeof Buffer.from === 'function'
+)
+
+function isArrayBuffer (input) {
+  return toString.call(input).slice(8, -1) === 'ArrayBuffer'
+}
+
+function fromArrayBuffer (obj, byteOffset, length) {
+  byteOffset >>>= 0
+
+  var maxLength = obj.byteLength - byteOffset
+
+  if (maxLength < 0) {
+    throw new RangeError("'offset' is out of bounds")
+  }
+
+  if (length === undefined) {
+    length = maxLength
+  } else {
+    length >>>= 0
+
+    if (length > maxLength) {
+      throw new RangeError("'length' is out of bounds")
+    }
+  }
+
+  return isModern
+    ? Buffer.from(obj.slice(byteOffset, byteOffset + length))
+    : new Buffer(new Uint8Array(obj.slice(byteOffset, byteOffset + length)))
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('"encoding" must be a valid string encoding')
+  }
+
+  return isModern
+    ? Buffer.from(string, encoding)
+    : new Buffer(string, encoding)
+}
+
+function bufferFrom (value, encodingOrOffset, length) {
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number')
+  }
+
+  if (isArrayBuffer(value)) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  return isModern
+    ? Buffer.from(value)
+    : new Buffer(value)
+}
+
+module.exports = bufferFrom