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node_modules/engine.io-client/build/cjs/transport.js

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+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Transport = void 0;
+const engine_io_parser_1 = require("engine.io-parser");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const util_js_1 = require("./util.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:transport"); // debug()
+class TransportError extends Error {
+    constructor(reason, description, context) {
+        super(reason);
+        this.description = description;
+        this.context = context;
+        this.type = "TransportError";
+    }
+}
+class Transport extends component_emitter_1.Emitter {
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts) {
+        super();
+        this.writable = false;
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this.opts = opts;
+        this.query = opts.query;
+        this.socket = opts.socket;
+    }
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    onError(reason, description, context) {
+        super.emitReserved("error", new TransportError(reason, description, context));
+        return this;
+    }
+    /**
+     * Opens the transport.
+     */
+    open() {
+        this.readyState = "opening";
+        this.doOpen();
+        return this;
+    }
+    /**
+     * Closes the transport.
+     */
+    close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
+            this.doClose();
+            this.onClose();
+        }
+        return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets) {
+        if (this.readyState === "open") {
+            this.write(packets);
+        }
+        else {
+            // this might happen if the transport was silently closed in the beforeunload event handler
+            debug("transport is not open, discarding packets");
+        }
+    }
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    onOpen() {
+        this.readyState = "open";
+        this.writable = true;
+        super.emitReserved("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    onData(data) {
+        const packet = (0, engine_io_parser_1.decodePacket)(data, this.socket.binaryType);
+        this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    onPacket(packet) {
+        super.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    onClose(details) {
+        this.readyState = "closed";
+        super.emitReserved("close", details);
+    }
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause) { }
+}
+exports.Transport = Transport;