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

node_modules/engine.io-parser/build/cjs/decodePacket.browser.js

@@ -0,0 +1,66 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.decodePacket = void 0;
+const commons_js_1 = require("./commons.js");
+const base64_arraybuffer_js_1 = require("./contrib/base64-arraybuffer.js");
+const withNativeArrayBuffer = typeof ArrayBuffer === "function";
+const decodePacket = (encodedPacket, binaryType) => {
+    if (typeof encodedPacket !== "string") {
+        return {
+            type: "message",
+            data: mapBinary(encodedPacket, binaryType),
+        };
+    }
+    const type = encodedPacket.charAt(0);
+    if (type === "b") {
+        return {
+            type: "message",
+            data: decodeBase64Packet(encodedPacket.substring(1), binaryType),
+        };
+    }
+    const packetType = commons_js_1.PACKET_TYPES_REVERSE[type];
+    if (!packetType) {
+        return commons_js_1.ERROR_PACKET;
+    }
+    return encodedPacket.length > 1
+        ? {
+            type: commons_js_1.PACKET_TYPES_REVERSE[type],
+            data: encodedPacket.substring(1),
+        }
+        : {
+            type: commons_js_1.PACKET_TYPES_REVERSE[type],
+        };
+};
+exports.decodePacket = decodePacket;
+const decodeBase64Packet = (data, binaryType) => {
+    if (withNativeArrayBuffer) {
+        const decoded = (0, base64_arraybuffer_js_1.decode)(data);
+        return mapBinary(decoded, binaryType);
+    }
+    else {
+        return { base64: true, data }; // fallback for old browsers
+    }
+};
+const mapBinary = (data, binaryType) => {
+    switch (binaryType) {
+        case "blob":
+            if (data instanceof Blob) {
+                // from WebSocket + binaryType "blob"
+                return data;
+            }
+            else {
+                // from HTTP long-polling or WebTransport
+                return new Blob([data]);
+            }
+        case "arraybuffer":
+        default:
+            if (data instanceof ArrayBuffer) {
+                // from HTTP long-polling (base64) or WebSocket + binaryType "arraybuffer"
+                return data;
+            }
+            else {
+                // from WebTransport (Uint8Array)
+                return data.buffer;
+            }
+    }
+};