1 files changed, 39 insertions, 0 deletions
diff --git a/remote/test/puppeteer/packages/puppeteer-core/src/common/LazyArg.ts b/remote/test/puppeteer/packages/puppeteer-core/src/common/LazyArg.ts
new file mode 100644
index 0000000000..7ba7dd707e
--- /dev/null
+++ b/remote/test/puppeteer/packages/puppeteer-core/src/common/LazyArg.ts
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2022 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {ExecutionContext} from './ExecutionContext.js';
+
+/**
+ * @internal
+ */
+export class LazyArg<T> {
+  static create = <T>(
+    get: (context: ExecutionContext) => Promise<T> | T
+  ): T => {
+    // We don't want to introduce LazyArg to the type system, otherwise we would
+    // have to make it public.
+    return new LazyArg(get) as unknown as T;
+  };
+
+  #get: (context: ExecutionContext) => Promise<T> | T;
+  private constructor(get: (context: ExecutionContext) => Promise<T> | T) {
+    this.#get = get;
+  }
+
+  async get(context: ExecutionContext): Promise<T> {
+    return this.#get(context);
+  }
+}