前端代码

node_modules/socket.io-parser/LICENSE

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+(The MIT License)
+
+Copyright (c) 2014 Guillermo Rauch <guillermo@learnboost.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.

node_modules/socket.io-parser/Readme.md

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+
+# socket.io-parser
+
+[![Build Status](https://github.com/socketio/socket.io-parser/workflows/CI/badge.svg)](https://github.com/socketio/socket.io-parser/actions)
+[![NPM version](https://badge.fury.io/js/socket.io-parser.svg)](http://badge.fury.io/js/socket.io-parser)
+
+A socket.io encoder and decoder written in JavaScript complying with version `5`
+of [socket.io-protocol](https://github.com/socketio/socket.io-protocol).
+Used by [socket.io](https://github.com/automattic/socket.io) and
+[socket.io-client](https://github.com/automattic/socket.io-client).
+
+Compatibility table:
+
+| Parser version | Socket.IO server version | Protocol revision |
+|----------------| ------------------------ | ----------------- |
+| 3.x            | 1.x / 2.x                | 4                 |
+| 4.x            | 3.x                      | 5                 |
+
+
+## Parser API
+
+  socket.io-parser is the reference implementation of socket.io-protocol. Read
+  the full API here:
+  [socket.io-protocol](https://github.com/learnboost/socket.io-protocol).
+
+## Example Usage
+
+### Encoding and decoding a packet
+
+```js
+var parser = require('socket.io-parser');
+var encoder = new parser.Encoder();
+var packet = {
+  type: parser.EVENT,
+  data: 'test-packet',
+  id: 13
+};
+encoder.encode(packet, function(encodedPackets) {
+  var decoder = new parser.Decoder();
+  decoder.on('decoded', function(decodedPacket) {
+    // decodedPacket.type == parser.EVENT
+    // decodedPacket.data == 'test-packet'
+    // decodedPacket.id == 13
+  });
+
+  for (var i = 0; i < encodedPackets.length; i++) {
+    decoder.add(encodedPackets[i]);
+  }
+});
+```
+
+### Encoding and decoding a packet with binary data
+
+```js
+var parser = require('socket.io-parser');
+var encoder = new parser.Encoder();
+var packet = {
+  type: parser.BINARY_EVENT,
+  data: {i: new Buffer(1234), j: new Blob([new ArrayBuffer(2)])},
+  id: 15
+};
+encoder.encode(packet, function(encodedPackets) {
+  var decoder = new parser.Decoder();
+  decoder.on('decoded', function(decodedPacket) {
+    // decodedPacket.type == parser.BINARY_EVENT
+    // Buffer.isBuffer(decodedPacket.data.i) == true
+    // Buffer.isBuffer(decodedPacket.data.j) == true
+    // decodedPacket.id == 15
+  });
+
+  for (var i = 0; i < encodedPackets.length; i++) {
+    decoder.add(encodedPackets[i]);
+  }
+});
+```
+See the test suite for more examples of how socket.io-parser is used.
+
+
+## License
+
+MIT

node_modules/socket.io-parser/build/cjs/binary.d.ts

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+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+export declare function deconstructPacket(packet: any): {
+    packet: any;
+    buffers: any[];
+};
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+export declare function reconstructPacket(packet: any, buffers: any): any;

node_modules/socket.io-parser/build/cjs/binary.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.reconstructPacket = exports.deconstructPacket = void 0;
+const is_binary_js_1 = require("./is-binary.js");
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+function deconstructPacket(packet) {
+    const buffers = [];
+    const packetData = packet.data;
+    const pack = packet;
+    pack.data = _deconstructPacket(packetData, buffers);
+    pack.attachments = buffers.length; // number of binary 'attachments'
+    return { packet: pack, buffers: buffers };
+}
+exports.deconstructPacket = deconstructPacket;
+function _deconstructPacket(data, buffers) {
+    if (!data)
+        return data;
+    if ((0, is_binary_js_1.isBinary)(data)) {
+        const placeholder = { _placeholder: true, num: buffers.length };
+        buffers.push(data);
+        return placeholder;
+    }
+    else if (Array.isArray(data)) {
+        const newData = new Array(data.length);
+        for (let i = 0; i < data.length; i++) {
+            newData[i] = _deconstructPacket(data[i], buffers);
+        }
+        return newData;
+    }
+    else if (typeof data === "object" && !(data instanceof Date)) {
+        const newData = {};
+        for (const key in data) {
+            if (Object.prototype.hasOwnProperty.call(data, key)) {
+                newData[key] = _deconstructPacket(data[key], buffers);
+            }
+        }
+        return newData;
+    }
+    return data;
+}
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+function reconstructPacket(packet, buffers) {
+    packet.data = _reconstructPacket(packet.data, buffers);
+    delete packet.attachments; // no longer useful
+    return packet;
+}
+exports.reconstructPacket = reconstructPacket;
+function _reconstructPacket(data, buffers) {
+    if (!data)
+        return data;
+    if (data && data._placeholder === true) {
+        const isIndexValid = typeof data.num === "number" &&
+            data.num >= 0 &&
+            data.num < buffers.length;
+        if (isIndexValid) {
+            return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+        }
+        else {
+            throw new Error("illegal attachments");
+        }
+    }
+    else if (Array.isArray(data)) {
+        for (let i = 0; i < data.length; i++) {
+            data[i] = _reconstructPacket(data[i], buffers);
+        }
+    }
+    else if (typeof data === "object") {
+        for (const key in data) {
+            if (Object.prototype.hasOwnProperty.call(data, key)) {
+                data[key] = _reconstructPacket(data[key], buffers);
+            }
+        }
+    }
+    return data;
+}

node_modules/socket.io-parser/build/cjs/index.d.ts

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+import { Emitter } from "@socket.io/component-emitter";
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+export declare const protocol: number;
+export declare enum PacketType {
+    CONNECT = 0,
+    DISCONNECT = 1,
+    EVENT = 2,
+    ACK = 3,
+    CONNECT_ERROR = 4,
+    BINARY_EVENT = 5,
+    BINARY_ACK = 6
+}
+export interface Packet {
+    type: PacketType;
+    nsp: string;
+    data?: any;
+    id?: number;
+    attachments?: number;
+}
+/**
+ * A socket.io Encoder instance
+ */
+export declare class Encoder {
+    private replacer?;
+    /**
+     * Encoder constructor
+     *
+     * @param {function} replacer - custom replacer to pass down to JSON.parse
+     */
+    constructor(replacer?: (this: any, key: string, value: any) => any);
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    encode(obj: Packet): any[];
+    /**
+     * Encode packet as string.
+     */
+    private encodeAsString;
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+    private encodeAsBinary;
+}
+interface DecoderReservedEvents {
+    decoded: (packet: Packet) => void;
+}
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+export declare class Decoder extends Emitter<{}, {}, DecoderReservedEvents> {
+    private reviver?;
+    private reconstructor;
+    /**
+     * Decoder constructor
+     *
+     * @param {function} reviver - custom reviver to pass down to JSON.stringify
+     */
+    constructor(reviver?: (this: any, key: string, value: any) => any);
+    /**
+     * Decodes an encoded packet string into packet JSON.
+     *
+     * @param {String} obj - encoded packet
+     */
+    add(obj: any): void;
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+    private decodeString;
+    private tryParse;
+    private static isPayloadValid;
+    /**
+     * Deallocates a parser's resources
+     */
+    destroy(): void;
+}
+export {};

node_modules/socket.io-parser/build/cjs/index.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;
+const component_emitter_1 = require("@socket.io/component-emitter");
+const binary_js_1 = require("./binary.js");
+const is_binary_js_1 = require("./is-binary.js");
+const debug_1 = require("debug"); // debug()
+const debug = (0, debug_1.default)("socket.io-parser"); // debug()
+/**
+ * These strings must not be used as event names, as they have a special meaning.
+ */
+const RESERVED_EVENTS = [
+    "connect",
+    "connect_error",
+    "disconnect",
+    "disconnecting",
+    "newListener",
+    "removeListener", // used by the Node.js EventEmitter
+];
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+exports.protocol = 5;
+var PacketType;
+(function (PacketType) {
+    PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
+    PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
+    PacketType[PacketType["EVENT"] = 2] = "EVENT";
+    PacketType[PacketType["ACK"] = 3] = "ACK";
+    PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
+    PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
+    PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
+})(PacketType = exports.PacketType || (exports.PacketType = {}));
+/**
+ * A socket.io Encoder instance
+ */
+class Encoder {
+    /**
+     * Encoder constructor
+     *
+     * @param {function} replacer - custom replacer to pass down to JSON.parse
+     */
+    constructor(replacer) {
+        this.replacer = replacer;
+    }
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    encode(obj) {
+        debug("encoding packet %j", obj);
+        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
+            if ((0, is_binary_js_1.hasBinary)(obj)) {
+                return this.encodeAsBinary({
+                    type: obj.type === PacketType.EVENT
+                        ? PacketType.BINARY_EVENT
+                        : PacketType.BINARY_ACK,
+                    nsp: obj.nsp,
+                    data: obj.data,
+                    id: obj.id,
+                });
+            }
+        }
+        return [this.encodeAsString(obj)];
+    }
+    /**
+     * Encode packet as string.
+     */
+    encodeAsString(obj) {
+        // first is type
+        let str = "" + obj.type;
+        // attachments if we have them
+        if (obj.type === PacketType.BINARY_EVENT ||
+            obj.type === PacketType.BINARY_ACK) {
+            str += obj.attachments + "-";
+        }
+        // if we have a namespace other than `/`
+        // we append it followed by a comma `,`
+        if (obj.nsp && "/" !== obj.nsp) {
+            str += obj.nsp + ",";
+        }
+        // immediately followed by the id
+        if (null != obj.id) {
+            str += obj.id;
+        }
+        // json data
+        if (null != obj.data) {
+            str += JSON.stringify(obj.data, this.replacer);
+        }
+        debug("encoded %j as %s", obj, str);
+        return str;
+    }
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+    encodeAsBinary(obj) {
+        const deconstruction = (0, binary_js_1.deconstructPacket)(obj);
+        const pack = this.encodeAsString(deconstruction.packet);
+        const buffers = deconstruction.buffers;
+        buffers.unshift(pack); // add packet info to beginning of data list
+        return buffers; // write all the buffers
+    }
+}
+exports.Encoder = Encoder;
+// see https://stackoverflow.com/questions/8511281/check-if-a-value-is-an-object-in-javascript
+function isObject(value) {
+    return Object.prototype.toString.call(value) === "[object Object]";
+}
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+class Decoder extends component_emitter_1.Emitter {
+    /**
+     * Decoder constructor
+     *
+     * @param {function} reviver - custom reviver to pass down to JSON.stringify
+     */
+    constructor(reviver) {
+        super();
+        this.reviver = reviver;
+    }
+    /**
+     * Decodes an encoded packet string into packet JSON.
+     *
+     * @param {String} obj - encoded packet
+     */
+    add(obj) {
+        let packet;
+        if (typeof obj === "string") {
+            if (this.reconstructor) {
+                throw new Error("got plaintext data when reconstructing a packet");
+            }
+            packet = this.decodeString(obj);
+            const isBinaryEvent = packet.type === PacketType.BINARY_EVENT;
+            if (isBinaryEvent || packet.type === PacketType.BINARY_ACK) {
+                packet.type = isBinaryEvent ? PacketType.EVENT : PacketType.ACK;
+                // binary packet's json
+                this.reconstructor = new BinaryReconstructor(packet);
+                // no attachments, labeled binary but no binary data to follow
+                if (packet.attachments === 0) {
+                    super.emitReserved("decoded", packet);
+                }
+            }
+            else {
+                // non-binary full packet
+                super.emitReserved("decoded", packet);
+            }
+        }
+        else if ((0, is_binary_js_1.isBinary)(obj) || obj.base64) {
+            // raw binary data
+            if (!this.reconstructor) {
+                throw new Error("got binary data when not reconstructing a packet");
+            }
+            else {
+                packet = this.reconstructor.takeBinaryData(obj);
+                if (packet) {
+                    // received final buffer
+                    this.reconstructor = null;
+                    super.emitReserved("decoded", packet);
+                }
+            }
+        }
+        else {
+            throw new Error("Unknown type: " + obj);
+        }
+    }
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+    decodeString(str) {
+        let i = 0;
+        // look up type
+        const p = {
+            type: Number(str.charAt(0)),
+        };
+        if (PacketType[p.type] === undefined) {
+            throw new Error("unknown packet type " + p.type);
+        }
+        // look up attachments if type binary
+        if (p.type === PacketType.BINARY_EVENT ||
+            p.type === PacketType.BINARY_ACK) {
+            const start = i + 1;
+            while (str.charAt(++i) !== "-" && i != str.length) { }
+            const buf = str.substring(start, i);
+            if (buf != Number(buf) || str.charAt(i) !== "-") {
+                throw new Error("Illegal attachments");
+            }
+            p.attachments = Number(buf);
+        }
+        // look up namespace (if any)
+        if ("/" === str.charAt(i + 1)) {
+            const start = i + 1;
+            while (++i) {
+                const c = str.charAt(i);
+                if ("," === c)
+                    break;
+                if (i === str.length)
+                    break;
+            }
+            p.nsp = str.substring(start, i);
+        }
+        else {
+            p.nsp = "/";
+        }
+        // look up id
+        const next = str.charAt(i + 1);
+        if ("" !== next && Number(next) == next) {
+            const start = i + 1;
+            while (++i) {
+                const c = str.charAt(i);
+                if (null == c || Number(c) != c) {
+                    --i;
+                    break;
+                }
+                if (i === str.length)
+                    break;
+            }
+            p.id = Number(str.substring(start, i + 1));
+        }
+        // look up json data
+        if (str.charAt(++i)) {
+            const payload = this.tryParse(str.substr(i));
+            if (Decoder.isPayloadValid(p.type, payload)) {
+                p.data = payload;
+            }
+            else {
+                throw new Error("invalid payload");
+            }
+        }
+        debug("decoded %s as %j", str, p);
+        return p;
+    }
+    tryParse(str) {
+        try {
+            return JSON.parse(str, this.reviver);
+        }
+        catch (e) {
+            return false;
+        }
+    }
+    static isPayloadValid(type, payload) {
+        switch (type) {
+            case PacketType.CONNECT:
+                return isObject(payload);
+            case PacketType.DISCONNECT:
+                return payload === undefined;
+            case PacketType.CONNECT_ERROR:
+                return typeof payload === "string" || isObject(payload);
+            case PacketType.EVENT:
+            case PacketType.BINARY_EVENT:
+                return (Array.isArray(payload) &&
+                    (typeof payload[0] === "number" ||
+                        (typeof payload[0] === "string" &&
+                            RESERVED_EVENTS.indexOf(payload[0]) === -1)));
+            case PacketType.ACK:
+            case PacketType.BINARY_ACK:
+                return Array.isArray(payload);
+        }
+    }
+    /**
+     * Deallocates a parser's resources
+     */
+    destroy() {
+        if (this.reconstructor) {
+            this.reconstructor.finishedReconstruction();
+            this.reconstructor = null;
+        }
+    }
+}
+exports.Decoder = Decoder;
+/**
+ * A manager of a binary event's 'buffer sequence'. Should
+ * be constructed whenever a packet of type BINARY_EVENT is
+ * decoded.
+ *
+ * @param {Object} packet
+ * @return {BinaryReconstructor} initialized reconstructor
+ */
+class BinaryReconstructor {
+    constructor(packet) {
+        this.packet = packet;
+        this.buffers = [];
+        this.reconPack = packet;
+    }
+    /**
+     * Method to be called when binary data received from connection
+     * after a BINARY_EVENT packet.
+     *
+     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+     * @return {null | Object} returns null if more binary data is expected or
+     *   a reconstructed packet object if all buffers have been received.
+     */
+    takeBinaryData(binData) {
+        this.buffers.push(binData);
+        if (this.buffers.length === this.reconPack.attachments) {
+            // done with buffer list
+            const packet = (0, binary_js_1.reconstructPacket)(this.reconPack, this.buffers);
+            this.finishedReconstruction();
+            return packet;
+        }
+        return null;
+    }
+    /**
+     * Cleans up binary packet reconstruction variables.
+     */
+    finishedReconstruction() {
+        this.reconPack = null;
+        this.buffers = [];
+    }
+}

node_modules/socket.io-parser/build/cjs/is-binary.d.ts

@@ -0,0 +1,7 @@
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+export declare function isBinary(obj: any): boolean;
+export declare function hasBinary(obj: any, toJSON?: boolean): any;

node_modules/socket.io-parser/build/cjs/is-binary.js

@@ -0,0 +1,55 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.hasBinary = exports.isBinary = void 0;
+const withNativeArrayBuffer = typeof ArrayBuffer === "function";
+const isView = (obj) => {
+    return typeof ArrayBuffer.isView === "function"
+        ? ArrayBuffer.isView(obj)
+        : obj.buffer instanceof ArrayBuffer;
+};
+const toString = Object.prototype.toString;
+const withNativeBlob = typeof Blob === "function" ||
+    (typeof Blob !== "undefined" &&
+        toString.call(Blob) === "[object BlobConstructor]");
+const withNativeFile = typeof File === "function" ||
+    (typeof File !== "undefined" &&
+        toString.call(File) === "[object FileConstructor]");
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+function isBinary(obj) {
+    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||
+        (withNativeBlob && obj instanceof Blob) ||
+        (withNativeFile && obj instanceof File));
+}
+exports.isBinary = isBinary;
+function hasBinary(obj, toJSON) {
+    if (!obj || typeof obj !== "object") {
+        return false;
+    }
+    if (Array.isArray(obj)) {
+        for (let i = 0, l = obj.length; i < l; i++) {
+            if (hasBinary(obj[i])) {
+                return true;
+            }
+        }
+        return false;
+    }
+    if (isBinary(obj)) {
+        return true;
+    }
+    if (obj.toJSON &&
+        typeof obj.toJSON === "function" &&
+        arguments.length === 1) {
+        return hasBinary(obj.toJSON(), true);
+    }
+    for (const key in obj) {
+        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
+            return true;
+        }
+    }
+    return false;
+}
+exports.hasBinary = hasBinary;

node_modules/socket.io-parser/build/cjs/package.json

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

node_modules/socket.io-parser/build/esm-debug/binary.d.ts

@@ -0,0 +1,20 @@
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+export declare function deconstructPacket(packet: any): {
+    packet: any;
+    buffers: any[];
+};
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+export declare function reconstructPacket(packet: any, buffers: any): any;

node_modules/socket.io-parser/build/esm-debug/binary.js

@@ -0,0 +1,83 @@
+import { isBinary } from "./is-binary.js";
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+export function deconstructPacket(packet) {
+    const buffers = [];
+    const packetData = packet.data;
+    const pack = packet;
+    pack.data = _deconstructPacket(packetData, buffers);
+    pack.attachments = buffers.length; // number of binary 'attachments'
+    return { packet: pack, buffers: buffers };
+}
+function _deconstructPacket(data, buffers) {
+    if (!data)
+        return data;
+    if (isBinary(data)) {
+        const placeholder = { _placeholder: true, num: buffers.length };
+        buffers.push(data);
+        return placeholder;
+    }
+    else if (Array.isArray(data)) {
+        const newData = new Array(data.length);
+        for (let i = 0; i < data.length; i++) {
+            newData[i] = _deconstructPacket(data[i], buffers);
+        }
+        return newData;
+    }
+    else if (typeof data === "object" && !(data instanceof Date)) {
+        const newData = {};
+        for (const key in data) {
+            if (Object.prototype.hasOwnProperty.call(data, key)) {
+                newData[key] = _deconstructPacket(data[key], buffers);
+            }
+        }
+        return newData;
+    }
+    return data;
+}
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+export function reconstructPacket(packet, buffers) {
+    packet.data = _reconstructPacket(packet.data, buffers);
+    delete packet.attachments; // no longer useful
+    return packet;
+}
+function _reconstructPacket(data, buffers) {
+    if (!data)
+        return data;
+    if (data && data._placeholder === true) {
+        const isIndexValid = typeof data.num === "number" &&
+            data.num >= 0 &&
+            data.num < buffers.length;
+        if (isIndexValid) {
+            return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+        }
+        else {
+            throw new Error("illegal attachments");
+        }
+    }
+    else if (Array.isArray(data)) {
+        for (let i = 0; i < data.length; i++) {
+            data[i] = _reconstructPacket(data[i], buffers);
+        }
+    }
+    else if (typeof data === "object") {
+        for (const key in data) {
+            if (Object.prototype.hasOwnProperty.call(data, key)) {
+                data[key] = _reconstructPacket(data[key], buffers);
+            }
+        }
+    }
+    return data;
+}

node_modules/socket.io-parser/build/esm-debug/index.d.ts

@@ -0,0 +1,90 @@
+import { Emitter } from "@socket.io/component-emitter";
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+export declare const protocol: number;
+export declare enum PacketType {
+    CONNECT = 0,
+    DISCONNECT = 1,
+    EVENT = 2,
+    ACK = 3,
+    CONNECT_ERROR = 4,
+    BINARY_EVENT = 5,
+    BINARY_ACK = 6
+}
+export interface Packet {
+    type: PacketType;
+    nsp: string;
+    data?: any;
+    id?: number;
+    attachments?: number;
+}
+/**
+ * A socket.io Encoder instance
+ */
+export declare class Encoder {
+    private replacer?;
+    /**
+     * Encoder constructor
+     *
+     * @param {function} replacer - custom replacer to pass down to JSON.parse
+     */
+    constructor(replacer?: (this: any, key: string, value: any) => any);
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    encode(obj: Packet): any[];
+    /**
+     * Encode packet as string.
+     */
+    private encodeAsString;
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+    private encodeAsBinary;
+}
+interface DecoderReservedEvents {
+    decoded: (packet: Packet) => void;
+}
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+export declare class Decoder extends Emitter<{}, {}, DecoderReservedEvents> {
+    private reviver?;
+    private reconstructor;
+    /**
+     * Decoder constructor
+     *
+     * @param {function} reviver - custom reviver to pass down to JSON.stringify
+     */
+    constructor(reviver?: (this: any, key: string, value: any) => any);
+    /**
+     * Decodes an encoded packet string into packet JSON.
+     *
+     * @param {String} obj - encoded packet
+     */
+    add(obj: any): void;
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+    private decodeString;
+    private tryParse;
+    private static isPayloadValid;
+    /**
+     * Deallocates a parser's resources
+     */
+    destroy(): void;
+}
+export {};

node_modules/socket.io-parser/build/esm-debug/index.js

@@ -0,0 +1,316 @@
+import { Emitter } from "@socket.io/component-emitter";
+import { deconstructPacket, reconstructPacket } from "./binary.js";
+import { isBinary, hasBinary } from "./is-binary.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("socket.io-parser"); // debug()
+/**
+ * These strings must not be used as event names, as they have a special meaning.
+ */
+const RESERVED_EVENTS = [
+    "connect",
+    "connect_error",
+    "disconnect",
+    "disconnecting",
+    "newListener",
+    "removeListener", // used by the Node.js EventEmitter
+];
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+export const protocol = 5;
+export var PacketType;
+(function (PacketType) {
+    PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
+    PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
+    PacketType[PacketType["EVENT"] = 2] = "EVENT";
+    PacketType[PacketType["ACK"] = 3] = "ACK";
+    PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
+    PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
+    PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
+})(PacketType || (PacketType = {}));
+/**
+ * A socket.io Encoder instance
+ */
+export class Encoder {
+    /**
+     * Encoder constructor
+     *
+     * @param {function} replacer - custom replacer to pass down to JSON.parse
+     */
+    constructor(replacer) {
+        this.replacer = replacer;
+    }
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    encode(obj) {
+        debug("encoding packet %j", obj);
+        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
+            if (hasBinary(obj)) {
+                return this.encodeAsBinary({
+                    type: obj.type === PacketType.EVENT
+                        ? PacketType.BINARY_EVENT
+                        : PacketType.BINARY_ACK,
+                    nsp: obj.nsp,
+                    data: obj.data,
+                    id: obj.id,
+                });
+            }
+        }
+        return [this.encodeAsString(obj)];
+    }
+    /**
+     * Encode packet as string.
+     */
+    encodeAsString(obj) {
+        // first is type
+        let str = "" + obj.type;
+        // attachments if we have them
+        if (obj.type === PacketType.BINARY_EVENT ||
+            obj.type === PacketType.BINARY_ACK) {
+            str += obj.attachments + "-";
+        }
+        // if we have a namespace other than `/`
+        // we append it followed by a comma `,`
+        if (obj.nsp && "/" !== obj.nsp) {
+            str += obj.nsp + ",";
+        }
+        // immediately followed by the id
+        if (null != obj.id) {
+            str += obj.id;
+        }
+        // json data
+        if (null != obj.data) {
+            str += JSON.stringify(obj.data, this.replacer);
+        }
+        debug("encoded %j as %s", obj, str);
+        return str;
+    }
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+    encodeAsBinary(obj) {
+        const deconstruction = deconstructPacket(obj);
+        const pack = this.encodeAsString(deconstruction.packet);
+        const buffers = deconstruction.buffers;
+        buffers.unshift(pack); // add packet info to beginning of data list
+        return buffers; // write all the buffers
+    }
+}
+// see https://stackoverflow.com/questions/8511281/check-if-a-value-is-an-object-in-javascript
+function isObject(value) {
+    return Object.prototype.toString.call(value) === "[object Object]";
+}
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+export class Decoder extends Emitter {
+    /**
+     * Decoder constructor
+     *
+     * @param {function} reviver - custom reviver to pass down to JSON.stringify
+     */
+    constructor(reviver) {
+        super();
+        this.reviver = reviver;
+    }
+    /**
+     * Decodes an encoded packet string into packet JSON.
+     *
+     * @param {String} obj - encoded packet
+     */
+    add(obj) {
+        let packet;
+        if (typeof obj === "string") {
+            if (this.reconstructor) {
+                throw new Error("got plaintext data when reconstructing a packet");
+            }
+            packet = this.decodeString(obj);
+            const isBinaryEvent = packet.type === PacketType.BINARY_EVENT;
+            if (isBinaryEvent || packet.type === PacketType.BINARY_ACK) {
+                packet.type = isBinaryEvent ? PacketType.EVENT : PacketType.ACK;
+                // binary packet's json
+                this.reconstructor = new BinaryReconstructor(packet);
+                // no attachments, labeled binary but no binary data to follow
+                if (packet.attachments === 0) {
+                    super.emitReserved("decoded", packet);
+                }
+            }
+            else {
+                // non-binary full packet
+                super.emitReserved("decoded", packet);
+            }
+        }
+        else if (isBinary(obj) || obj.base64) {
+            // raw binary data
+            if (!this.reconstructor) {
+                throw new Error("got binary data when not reconstructing a packet");
+            }
+            else {
+                packet = this.reconstructor.takeBinaryData(obj);
+                if (packet) {
+                    // received final buffer
+                    this.reconstructor = null;
+                    super.emitReserved("decoded", packet);
+                }
+            }
+        }
+        else {
+            throw new Error("Unknown type: " + obj);
+        }
+    }
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+    decodeString(str) {
+        let i = 0;
+        // look up type
+        const p = {
+            type: Number(str.charAt(0)),
+        };
+        if (PacketType[p.type] === undefined) {
+            throw new Error("unknown packet type " + p.type);
+        }
+        // look up attachments if type binary
+        if (p.type === PacketType.BINARY_EVENT ||
+            p.type === PacketType.BINARY_ACK) {
+            const start = i + 1;
+            while (str.charAt(++i) !== "-" && i != str.length) { }
+            const buf = str.substring(start, i);
+            if (buf != Number(buf) || str.charAt(i) !== "-") {
+                throw new Error("Illegal attachments");
+            }
+            p.attachments = Number(buf);
+        }
+        // look up namespace (if any)
+        if ("/" === str.charAt(i + 1)) {
+            const start = i + 1;
+            while (++i) {
+                const c = str.charAt(i);
+                if ("," === c)
+                    break;
+                if (i === str.length)
+                    break;
+            }
+            p.nsp = str.substring(start, i);
+        }
+        else {
+            p.nsp = "/";
+        }
+        // look up id
+        const next = str.charAt(i + 1);
+        if ("" !== next && Number(next) == next) {
+            const start = i + 1;
+            while (++i) {
+                const c = str.charAt(i);
+                if (null == c || Number(c) != c) {
+                    --i;
+                    break;
+                }
+                if (i === str.length)
+                    break;
+            }
+            p.id = Number(str.substring(start, i + 1));
+        }
+        // look up json data
+        if (str.charAt(++i)) {
+            const payload = this.tryParse(str.substr(i));
+            if (Decoder.isPayloadValid(p.type, payload)) {
+                p.data = payload;
+            }
+            else {
+                throw new Error("invalid payload");
+            }
+        }
+        debug("decoded %s as %j", str, p);
+        return p;
+    }
+    tryParse(str) {
+        try {
+            return JSON.parse(str, this.reviver);
+        }
+        catch (e) {
+            return false;
+        }
+    }
+    static isPayloadValid(type, payload) {
+        switch (type) {
+            case PacketType.CONNECT:
+                return isObject(payload);
+            case PacketType.DISCONNECT:
+                return payload === undefined;
+            case PacketType.CONNECT_ERROR:
+                return typeof payload === "string" || isObject(payload);
+            case PacketType.EVENT:
+            case PacketType.BINARY_EVENT:
+                return (Array.isArray(payload) &&
+                    (typeof payload[0] === "number" ||
+                        (typeof payload[0] === "string" &&
+                            RESERVED_EVENTS.indexOf(payload[0]) === -1)));
+            case PacketType.ACK:
+            case PacketType.BINARY_ACK:
+                return Array.isArray(payload);
+        }
+    }
+    /**
+     * Deallocates a parser's resources
+     */
+    destroy() {
+        if (this.reconstructor) {
+            this.reconstructor.finishedReconstruction();
+            this.reconstructor = null;
+        }
+    }
+}
+/**
+ * A manager of a binary event's 'buffer sequence'. Should
+ * be constructed whenever a packet of type BINARY_EVENT is
+ * decoded.
+ *
+ * @param {Object} packet
+ * @return {BinaryReconstructor} initialized reconstructor
+ */
+class BinaryReconstructor {
+    constructor(packet) {
+        this.packet = packet;
+        this.buffers = [];
+        this.reconPack = packet;
+    }
+    /**
+     * Method to be called when binary data received from connection
+     * after a BINARY_EVENT packet.
+     *
+     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+     * @return {null | Object} returns null if more binary data is expected or
+     *   a reconstructed packet object if all buffers have been received.
+     */
+    takeBinaryData(binData) {
+        this.buffers.push(binData);
+        if (this.buffers.length === this.reconPack.attachments) {
+            // done with buffer list
+            const packet = reconstructPacket(this.reconPack, this.buffers);
+            this.finishedReconstruction();
+            return packet;
+        }
+        return null;
+    }
+    /**
+     * Cleans up binary packet reconstruction variables.
+     */
+    finishedReconstruction() {
+        this.reconPack = null;
+        this.buffers = [];
+    }
+}

node_modules/socket.io-parser/build/esm-debug/is-binary.d.ts

@@ -0,0 +1,7 @@
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+export declare function isBinary(obj: any): boolean;
+export declare function hasBinary(obj: any, toJSON?: boolean): any;

node_modules/socket.io-parser/build/esm-debug/is-binary.js

@@ -0,0 +1,50 @@
+const withNativeArrayBuffer = typeof ArrayBuffer === "function";
+const isView = (obj) => {
+    return typeof ArrayBuffer.isView === "function"
+        ? ArrayBuffer.isView(obj)
+        : obj.buffer instanceof ArrayBuffer;
+};
+const toString = Object.prototype.toString;
+const withNativeBlob = typeof Blob === "function" ||
+    (typeof Blob !== "undefined" &&
+        toString.call(Blob) === "[object BlobConstructor]");
+const withNativeFile = typeof File === "function" ||
+    (typeof File !== "undefined" &&
+        toString.call(File) === "[object FileConstructor]");
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+export function isBinary(obj) {
+    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||
+        (withNativeBlob && obj instanceof Blob) ||
+        (withNativeFile && obj instanceof File));
+}
+export function hasBinary(obj, toJSON) {
+    if (!obj || typeof obj !== "object") {
+        return false;
+    }
+    if (Array.isArray(obj)) {
+        for (let i = 0, l = obj.length; i < l; i++) {
+            if (hasBinary(obj[i])) {
+                return true;
+            }
+        }
+        return false;
+    }
+    if (isBinary(obj)) {
+        return true;
+    }
+    if (obj.toJSON &&
+        typeof obj.toJSON === "function" &&
+        arguments.length === 1) {
+        return hasBinary(obj.toJSON(), true);
+    }
+    for (const key in obj) {
+        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
+            return true;
+        }
+    }
+    return false;
+}

node_modules/socket.io-parser/build/esm-debug/package.json

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

node_modules/socket.io-parser/build/esm/binary.d.ts

@@ -0,0 +1,20 @@
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+export declare function deconstructPacket(packet: any): {
+    packet: any;
+    buffers: any[];
+};
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+export declare function reconstructPacket(packet: any, buffers: any): any;

node_modules/socket.io-parser/build/esm/binary.js

@@ -0,0 +1,83 @@
+import { isBinary } from "./is-binary.js";
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+export function deconstructPacket(packet) {
+    const buffers = [];
+    const packetData = packet.data;
+    const pack = packet;
+    pack.data = _deconstructPacket(packetData, buffers);
+    pack.attachments = buffers.length; // number of binary 'attachments'
+    return { packet: pack, buffers: buffers };
+}
+function _deconstructPacket(data, buffers) {
+    if (!data)
+        return data;
+    if (isBinary(data)) {
+        const placeholder = { _placeholder: true, num: buffers.length };
+        buffers.push(data);
+        return placeholder;
+    }
+    else if (Array.isArray(data)) {
+        const newData = new Array(data.length);
+        for (let i = 0; i < data.length; i++) {
+            newData[i] = _deconstructPacket(data[i], buffers);
+        }
+        return newData;
+    }
+    else if (typeof data === "object" && !(data instanceof Date)) {
+        const newData = {};
+        for (const key in data) {
+            if (Object.prototype.hasOwnProperty.call(data, key)) {
+                newData[key] = _deconstructPacket(data[key], buffers);
+            }
+        }
+        return newData;
+    }
+    return data;
+}
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+export function reconstructPacket(packet, buffers) {
+    packet.data = _reconstructPacket(packet.data, buffers);
+    delete packet.attachments; // no longer useful
+    return packet;
+}
+function _reconstructPacket(data, buffers) {
+    if (!data)
+        return data;
+    if (data && data._placeholder === true) {
+        const isIndexValid = typeof data.num === "number" &&
+            data.num >= 0 &&
+            data.num < buffers.length;
+        if (isIndexValid) {
+            return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+        }
+        else {
+            throw new Error("illegal attachments");
+        }
+    }
+    else if (Array.isArray(data)) {
+        for (let i = 0; i < data.length; i++) {
+            data[i] = _reconstructPacket(data[i], buffers);
+        }
+    }
+    else if (typeof data === "object") {
+        for (const key in data) {
+            if (Object.prototype.hasOwnProperty.call(data, key)) {
+                data[key] = _reconstructPacket(data[key], buffers);
+            }
+        }
+    }
+    return data;
+}

node_modules/socket.io-parser/build/esm/index.d.ts

@@ -0,0 +1,90 @@
+import { Emitter } from "@socket.io/component-emitter";
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+export declare const protocol: number;
+export declare enum PacketType {
+    CONNECT = 0,
+    DISCONNECT = 1,
+    EVENT = 2,
+    ACK = 3,
+    CONNECT_ERROR = 4,
+    BINARY_EVENT = 5,
+    BINARY_ACK = 6
+}
+export interface Packet {
+    type: PacketType;
+    nsp: string;
+    data?: any;
+    id?: number;
+    attachments?: number;
+}
+/**
+ * A socket.io Encoder instance
+ */
+export declare class Encoder {
+    private replacer?;
+    /**
+     * Encoder constructor
+     *
+     * @param {function} replacer - custom replacer to pass down to JSON.parse
+     */
+    constructor(replacer?: (this: any, key: string, value: any) => any);
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    encode(obj: Packet): any[];
+    /**
+     * Encode packet as string.
+     */
+    private encodeAsString;
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+    private encodeAsBinary;
+}
+interface DecoderReservedEvents {
+    decoded: (packet: Packet) => void;
+}
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+export declare class Decoder extends Emitter<{}, {}, DecoderReservedEvents> {
+    private reviver?;
+    private reconstructor;
+    /**
+     * Decoder constructor
+     *
+     * @param {function} reviver - custom reviver to pass down to JSON.stringify
+     */
+    constructor(reviver?: (this: any, key: string, value: any) => any);
+    /**
+     * Decodes an encoded packet string into packet JSON.
+     *
+     * @param {String} obj - encoded packet
+     */
+    add(obj: any): void;
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+    private decodeString;
+    private tryParse;
+    private static isPayloadValid;
+    /**
+     * Deallocates a parser's resources
+     */
+    destroy(): void;
+}
+export {};

node_modules/socket.io-parser/build/esm/index.js

@@ -0,0 +1,311 @@
+import { Emitter } from "@socket.io/component-emitter";
+import { deconstructPacket, reconstructPacket } from "./binary.js";
+import { isBinary, hasBinary } from "./is-binary.js";
+/**
+ * These strings must not be used as event names, as they have a special meaning.
+ */
+const RESERVED_EVENTS = [
+    "connect",
+    "connect_error",
+    "disconnect",
+    "disconnecting",
+    "newListener",
+    "removeListener", // used by the Node.js EventEmitter
+];
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+export const protocol = 5;
+export var PacketType;
+(function (PacketType) {
+    PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
+    PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
+    PacketType[PacketType["EVENT"] = 2] = "EVENT";
+    PacketType[PacketType["ACK"] = 3] = "ACK";
+    PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
+    PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
+    PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
+})(PacketType || (PacketType = {}));
+/**
+ * A socket.io Encoder instance
+ */
+export class Encoder {
+    /**
+     * Encoder constructor
+     *
+     * @param {function} replacer - custom replacer to pass down to JSON.parse
+     */
+    constructor(replacer) {
+        this.replacer = replacer;
+    }
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    encode(obj) {
+        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
+            if (hasBinary(obj)) {
+                return this.encodeAsBinary({
+                    type: obj.type === PacketType.EVENT
+                        ? PacketType.BINARY_EVENT
+                        : PacketType.BINARY_ACK,
+                    nsp: obj.nsp,
+                    data: obj.data,
+                    id: obj.id,
+                });
+            }
+        }
+        return [this.encodeAsString(obj)];
+    }
+    /**
+     * Encode packet as string.
+     */
+    encodeAsString(obj) {
+        // first is type
+        let str = "" + obj.type;
+        // attachments if we have them
+        if (obj.type === PacketType.BINARY_EVENT ||
+            obj.type === PacketType.BINARY_ACK) {
+            str += obj.attachments + "-";
+        }
+        // if we have a namespace other than `/`
+        // we append it followed by a comma `,`
+        if (obj.nsp && "/" !== obj.nsp) {
+            str += obj.nsp + ",";
+        }
+        // immediately followed by the id
+        if (null != obj.id) {
+            str += obj.id;
+        }
+        // json data
+        if (null != obj.data) {
+            str += JSON.stringify(obj.data, this.replacer);
+        }
+        return str;
+    }
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+    encodeAsBinary(obj) {
+        const deconstruction = deconstructPacket(obj);
+        const pack = this.encodeAsString(deconstruction.packet);
+        const buffers = deconstruction.buffers;
+        buffers.unshift(pack); // add packet info to beginning of data list
+        return buffers; // write all the buffers
+    }
+}
+// see https://stackoverflow.com/questions/8511281/check-if-a-value-is-an-object-in-javascript
+function isObject(value) {
+    return Object.prototype.toString.call(value) === "[object Object]";
+}
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+export class Decoder extends Emitter {
+    /**
+     * Decoder constructor
+     *
+     * @param {function} reviver - custom reviver to pass down to JSON.stringify
+     */
+    constructor(reviver) {
+        super();
+        this.reviver = reviver;
+    }
+    /**
+     * Decodes an encoded packet string into packet JSON.
+     *
+     * @param {String} obj - encoded packet
+     */
+    add(obj) {
+        let packet;
+        if (typeof obj === "string") {
+            if (this.reconstructor) {
+                throw new Error("got plaintext data when reconstructing a packet");
+            }
+            packet = this.decodeString(obj);
+            const isBinaryEvent = packet.type === PacketType.BINARY_EVENT;
+            if (isBinaryEvent || packet.type === PacketType.BINARY_ACK) {
+                packet.type = isBinaryEvent ? PacketType.EVENT : PacketType.ACK;
+                // binary packet's json
+                this.reconstructor = new BinaryReconstructor(packet);
+                // no attachments, labeled binary but no binary data to follow
+                if (packet.attachments === 0) {
+                    super.emitReserved("decoded", packet);
+                }
+            }
+            else {
+                // non-binary full packet
+                super.emitReserved("decoded", packet);
+            }
+        }
+        else if (isBinary(obj) || obj.base64) {
+            // raw binary data
+            if (!this.reconstructor) {
+                throw new Error("got binary data when not reconstructing a packet");
+            }
+            else {
+                packet = this.reconstructor.takeBinaryData(obj);
+                if (packet) {
+                    // received final buffer
+                    this.reconstructor = null;
+                    super.emitReserved("decoded", packet);
+                }
+            }
+        }
+        else {
+            throw new Error("Unknown type: " + obj);
+        }
+    }
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+    decodeString(str) {
+        let i = 0;
+        // look up type
+        const p = {
+            type: Number(str.charAt(0)),
+        };
+        if (PacketType[p.type] === undefined) {
+            throw new Error("unknown packet type " + p.type);
+        }
+        // look up attachments if type binary
+        if (p.type === PacketType.BINARY_EVENT ||
+            p.type === PacketType.BINARY_ACK) {
+            const start = i + 1;
+            while (str.charAt(++i) !== "-" && i != str.length) { }
+            const buf = str.substring(start, i);
+            if (buf != Number(buf) || str.charAt(i) !== "-") {
+                throw new Error("Illegal attachments");
+            }
+            p.attachments = Number(buf);
+        }
+        // look up namespace (if any)
+        if ("/" === str.charAt(i + 1)) {
+            const start = i + 1;
+            while (++i) {
+                const c = str.charAt(i);
+                if ("," === c)
+                    break;
+                if (i === str.length)
+                    break;
+            }
+            p.nsp = str.substring(start, i);
+        }
+        else {
+            p.nsp = "/";
+        }
+        // look up id
+        const next = str.charAt(i + 1);
+        if ("" !== next && Number(next) == next) {
+            const start = i + 1;
+            while (++i) {
+                const c = str.charAt(i);
+                if (null == c || Number(c) != c) {
+                    --i;
+                    break;
+                }
+                if (i === str.length)
+                    break;
+            }
+            p.id = Number(str.substring(start, i + 1));
+        }
+        // look up json data
+        if (str.charAt(++i)) {
+            const payload = this.tryParse(str.substr(i));
+            if (Decoder.isPayloadValid(p.type, payload)) {
+                p.data = payload;
+            }
+            else {
+                throw new Error("invalid payload");
+            }
+        }
+        return p;
+    }
+    tryParse(str) {
+        try {
+            return JSON.parse(str, this.reviver);
+        }
+        catch (e) {
+            return false;
+        }
+    }
+    static isPayloadValid(type, payload) {
+        switch (type) {
+            case PacketType.CONNECT:
+                return isObject(payload);
+            case PacketType.DISCONNECT:
+                return payload === undefined;
+            case PacketType.CONNECT_ERROR:
+                return typeof payload === "string" || isObject(payload);
+            case PacketType.EVENT:
+            case PacketType.BINARY_EVENT:
+                return (Array.isArray(payload) &&
+                    (typeof payload[0] === "number" ||
+                        (typeof payload[0] === "string" &&
+                            RESERVED_EVENTS.indexOf(payload[0]) === -1)));
+            case PacketType.ACK:
+            case PacketType.BINARY_ACK:
+                return Array.isArray(payload);
+        }
+    }
+    /**
+     * Deallocates a parser's resources
+     */
+    destroy() {
+        if (this.reconstructor) {
+            this.reconstructor.finishedReconstruction();
+            this.reconstructor = null;
+        }
+    }
+}
+/**
+ * A manager of a binary event's 'buffer sequence'. Should
+ * be constructed whenever a packet of type BINARY_EVENT is
+ * decoded.
+ *
+ * @param {Object} packet
+ * @return {BinaryReconstructor} initialized reconstructor
+ */
+class BinaryReconstructor {
+    constructor(packet) {
+        this.packet = packet;
+        this.buffers = [];
+        this.reconPack = packet;
+    }
+    /**
+     * Method to be called when binary data received from connection
+     * after a BINARY_EVENT packet.
+     *
+     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+     * @return {null | Object} returns null if more binary data is expected or
+     *   a reconstructed packet object if all buffers have been received.
+     */
+    takeBinaryData(binData) {
+        this.buffers.push(binData);
+        if (this.buffers.length === this.reconPack.attachments) {
+            // done with buffer list
+            const packet = reconstructPacket(this.reconPack, this.buffers);
+            this.finishedReconstruction();
+            return packet;
+        }
+        return null;
+    }
+    /**
+     * Cleans up binary packet reconstruction variables.
+     */
+    finishedReconstruction() {
+        this.reconPack = null;
+        this.buffers = [];
+    }
+}

node_modules/socket.io-parser/build/esm/is-binary.d.ts

@@ -0,0 +1,7 @@
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+export declare function isBinary(obj: any): boolean;
+export declare function hasBinary(obj: any, toJSON?: boolean): any;

node_modules/socket.io-parser/build/esm/is-binary.js

@@ -0,0 +1,50 @@
+const withNativeArrayBuffer = typeof ArrayBuffer === "function";
+const isView = (obj) => {
+    return typeof ArrayBuffer.isView === "function"
+        ? ArrayBuffer.isView(obj)
+        : obj.buffer instanceof ArrayBuffer;
+};
+const toString = Object.prototype.toString;
+const withNativeBlob = typeof Blob === "function" ||
+    (typeof Blob !== "undefined" &&
+        toString.call(Blob) === "[object BlobConstructor]");
+const withNativeFile = typeof File === "function" ||
+    (typeof File !== "undefined" &&
+        toString.call(File) === "[object FileConstructor]");
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+export function isBinary(obj) {
+    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||
+        (withNativeBlob && obj instanceof Blob) ||
+        (withNativeFile && obj instanceof File));
+}
+export function hasBinary(obj, toJSON) {
+    if (!obj || typeof obj !== "object") {
+        return false;
+    }
+    if (Array.isArray(obj)) {
+        for (let i = 0, l = obj.length; i < l; i++) {
+            if (hasBinary(obj[i])) {
+                return true;
+            }
+        }
+        return false;
+    }
+    if (isBinary(obj)) {
+        return true;
+    }
+    if (obj.toJSON &&
+        typeof obj.toJSON === "function" &&
+        arguments.length === 1) {
+        return hasBinary(obj.toJSON(), true);
+    }
+    for (const key in obj) {
+        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
+            return true;
+        }
+    }
+    return false;
+}

node_modules/socket.io-parser/build/esm/package.json

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

node_modules/socket.io-parser/package.json

@@ -0,0 +1,58 @@
+{
+  "name": "socket.io-parser",
+  "version": "4.2.4",
+  "description": "socket.io protocol parser",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/socketio/socket.io-parser.git"
+  },
+  "files": [
+    "build/"
+  ],
+  "main": "./build/cjs/index.js",
+  "module": "./build/esm/index.js",
+  "types": "./build/esm/index.d.ts",
+  "exports": {
+    "import": {
+      "node": "./build/esm-debug/index.js",
+      "default": "./build/esm/index.js"
+    },
+    "require": "./build/cjs/index.js"
+  },
+  "dependencies": {
+    "@socket.io/component-emitter": "~3.1.0",
+    "debug": "~4.3.1"
+  },
+  "devDependencies": {
+    "@babel/core": "~7.9.6",
+    "@babel/preset-env": "~7.9.6",
+    "@babel/register": "^7.18.9",
+    "@types/debug": "^4.1.5",
+    "@types/node": "^14.11.1",
+    "@wdio/cli": "^7.26.0",
+    "@wdio/local-runner": "^7.26.0",
+    "@wdio/mocha-framework": "^7.26.0",
+    "@wdio/sauce-service": "^7.26.0",
+    "@wdio/spec-reporter": "^7.26.0",
+    "benchmark": "2.1.2",
+    "expect.js": "0.3.1",
+    "mocha": "^10.1.0",
+    "prettier": "^2.1.2",
+    "rimraf": "^3.0.2",
+    "typescript": "^4.0.3",
+    "wdio-geckodriver-service": "^4.0.0"
+  },
+  "scripts": {
+    "compile": "rimraf ./build && tsc && tsc -p tsconfig.esm.json && ./postcompile.sh",
+    "test": "npm run format:check && npm run compile && if test \"$BROWSERS\" = \"1\" ; then npm run test:browser; else npm run test:node; fi",
+    "test:node": "mocha --reporter dot --bail test/index.js",
+    "test:browser": "wdio",
+    "format:fix": "prettier --write --parser typescript '*.js' 'lib/**/*.ts' 'test/**/*.js'",
+    "format:check": "prettier --check --parser typescript '*.js' 'lib/**/*.ts' 'test/**/*.js'",
+    "prepack": "npm run compile"
+  },
+  "license": "MIT",
+  "engines": {
+    "node": ">=10.0.0"
+  }
+}