Initial working version

node_modules/engine.io-parser/build/esm/encodePacket.js

@@ -0,0 +1,25 @@
+import { PACKET_TYPES } from "./commons.js";
+const encodePacket = ({ type, data }, supportsBinary, callback) => {
+    if (data instanceof ArrayBuffer || ArrayBuffer.isView(data)) {
+        const buffer = toBuffer(data);
+        return callback(encodeBuffer(buffer, supportsBinary));
+    }
+    // plain string
+    return callback(PACKET_TYPES[type] + (data || ""));
+};
+const toBuffer = data => {
+    if (Buffer.isBuffer(data)) {
+        return data;
+    }
+    else if (data instanceof ArrayBuffer) {
+        return Buffer.from(data);
+    }
+    else {
+        return Buffer.from(data.buffer, data.byteOffset, data.byteLength);
+    }
+};
+// only 'message' packets can contain binary, so the type prefix is not needed
+const encodeBuffer = (data, supportsBinary) => {
+    return supportsBinary ? data : "b" + data.toString("base64");
+};
+export default encodePacket;