4 files changed, 87 insertions, 0 deletions
diff --git a/remote/test/puppeteer/packages/puppeteer-core/third_party/mitt/mitt.ts b/remote/test/puppeteer/packages/puppeteer-core/third_party/mitt/mitt.ts
new file mode 100644
index 0000000000..c20aaa8342
--- /dev/null
+++ b/remote/test/puppeteer/packages/puppeteer-core/third_party/mitt/mitt.ts
@@ -0,0 +1,8 @@
+/**
+ * @license
+ * Copyright 2022 Google Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+export * from 'mitt';
+export {default as default} from 'mitt';
diff --git a/remote/test/puppeteer/packages/puppeteer-core/third_party/rxjs/rxjs.ts b/remote/test/puppeteer/packages/puppeteer-core/third_party/rxjs/rxjs.ts
new file mode 100644
index 0000000000..b8b64788ae
--- /dev/null
+++ b/remote/test/puppeteer/packages/puppeteer-core/third_party/rxjs/rxjs.ts
@@ -0,0 +1,61 @@
+/**
+ * @license
+ * Copyright 2023 Google Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+export {
+  bufferCount,
+  catchError,
+  concat,
+  concatMap,
+  defaultIfEmpty,
+  defer,
+  delay,
+  EMPTY,
+  filter,
+  first,
+  firstValueFrom,
+  forkJoin,
+  from,
+  fromEvent,
+  identity,
+  ignoreElements,
+  lastValueFrom,
+  map,
+  merge,
+  mergeMap,
+  NEVER,
+  noop,
+  Observable,
+  of,
+  pipe,
+  race,
+  raceWith,
+  retry,
+  startWith,
+  switchMap,
+  takeUntil,
+  tap,
+  throwIfEmpty,
+  timer,
+  zip,
+} from 'rxjs';
+
+export type * from 'rxjs';
+
+import {filter, from, map, mergeMap, type Observable} from 'rxjs';
+
+export function filterAsync<T>(
+  predicate: (value: T) => boolean | PromiseLike<boolean>
+) {
+  return mergeMap<T, Observable<T>>(value => {
+    return from(Promise.resolve(predicate(value))).pipe(
+      filter(isMatch => {
+        return isMatch;
+      }),
+      map(() => {
+        return value;
+      })
+    );
+  });
+}
diff --git a/remote/test/puppeteer/packages/puppeteer-core/third_party/tsconfig.cjs.json b/remote/test/puppeteer/packages/puppeteer-core/third_party/tsconfig.cjs.json
new file mode 100644
index 0000000000..a796932cd8
--- /dev/null
+++ b/remote/test/puppeteer/packages/puppeteer-core/third_party/tsconfig.cjs.json
@@ -0,0 +1,10 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "outDir": "../lib/cjs/third_party",
+    "declarationMap": false,
+    "sourceMap": false
+  }
+}
diff --git a/remote/test/puppeteer/packages/puppeteer-core/third_party/tsconfig.json b/remote/test/puppeteer/packages/puppeteer-core/third_party/tsconfig.json
new file mode 100644
index 0000000000..25c438c57d
--- /dev/null
+++ b/remote/test/puppeteer/packages/puppeteer-core/third_party/tsconfig.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../../../tsconfig.base.json",
+  "compilerOptions": {
+    "declarationMap": false,
+    "outDir": "../lib/esm/third_party",
+    "sourceMap": false,
+  },
+}