feat(auth): implement user authentication system

backend/node_modules/playwright/lib/mcp/test/streams.js

@@ -0,0 +1,44 @@
+"use strict";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var streams_exports = {};
+__export(streams_exports, {
+  StringWriteStream: () => StringWriteStream
+});
+module.exports = __toCommonJS(streams_exports);
+var import_stream = require("stream");
+var import_util = require("../../util");
+class StringWriteStream extends import_stream.Writable {
+  constructor(output, stdio) {
+    super();
+    this._output = output;
+    this._prefix = stdio === "stdout" ? "" : "[err] ";
+  }
+  _write(chunk, encoding, callback) {
+    let text = (0, import_util.stripAnsiEscapes)(chunk.toString());
+    if (text.endsWith("\n"))
+      text = text.slice(0, -1);
+    if (text)
+      this._output.push(this._prefix + text);
+    callback();
+  }
+}
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  StringWriteStream
+});