Init. Map does not function and only working on backend at the moment.

node_modules/engine.io/build/transports/websocket.d.ts

@@ -0,0 +1,49 @@
+import { Transport } from "../transport";
+export declare class WebSocket extends Transport {
+    protected perMessageDeflate: any;
+    private socket;
+    /**
+     * WebSocket transport
+     *
+     * @param {http.IncomingMessage}
+     * @api public
+     */
+    constructor(req: any);
+    /**
+     * Transport name
+     *
+     * @api public
+     */
+    get name(): string;
+    /**
+     * Advertise upgrade support.
+     *
+     * @api public
+     */
+    get handlesUpgrades(): boolean;
+    /**
+     * Advertise framing support.
+     *
+     * @api public
+     */
+    get supportsFraming(): boolean;
+    /**
+     * Writes a packet payload.
+     *
+     * @param {Array} packets
+     * @api private
+     */
+    send(packets: any): void;
+    /**
+     * Whether the encoding of the WebSocket frame can be skipped.
+     * @param packet
+     * @private
+     */
+    private _canSendPreEncodedFrame;
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+    doClose(fn: any): void;
+}