text: /**
   * Copyright 2018 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 { EventEmitter } from './EventEmitter.js';
  import { ExecutionContext } from './ExecutionContext.js';
  import { debugError } from './helper.js';
  import { JSHandle } from './JSHandle.js';
  
  /**
   * The WebWorker class represents a
   * {@link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API | WebWorker}.
   *
   * @remarks
   * The events `workercreated` and `workerdestroyed` are emitted on the page
   * object to signal the worker lifecycle.
   *
   * @example
   * ```js
   * page.on('workercreated', worker => console.log('Worker created: ' + worker.url()));
   * page.on('workerdestroyed', worker => console.log('Worker destroyed: ' + worker.url()));
   *
   * console.log('Current workers:');
   * for (const worker of page.workers()) {
   *   console.log('  ' + worker.url());
   * }
   * ```
   *
   * @public
   */
  export class WebWorker extends EventEmitter {
      /**
       *
       * @internal
       */
      constructor(client, url, consoleAPICalled, exceptionThrown) {
          super();
          this._client = client;
          this._url = url;
          this._executionContextPromise = new Promise((x) => (this._executionContextCallback = x));
          let jsHandleFactory;
          this._client.once('Runtime.executionContextCreated', async (event) => {
              // eslint-disable-next-line @typescript-eslint/explicit-function-return-type
              jsHandleFactory = (remoteObject) => new JSHandle(executionContext, client, remoteObject);
              const executionContext = new ExecutionContext(client, event.context, null);
              this._executionContextCallback(executionContext);
          });
          // This might fail if the target is closed before we receive all execution contexts.
          this._client.send('Runtime.enable').catch(debugError);
          this._client.on('Runtime.consoleAPICalled', (event) => consoleAPICalled(event.type, event.args.map(jsHandleFactory), event.stackTrace));
          this._client.on('Runtime.exceptionThrown', (exception) => exceptionThrown(exception.exceptionDetails));
      }
      /**
       * @returns The URL of this web worker.
       */
      url() {
          return this._url;
      }
      /**
       * Returns the ExecutionContext the WebWorker runs in
       * @returns The ExecutionContext the web worker runs in.
       */
      async executionContext() {
          return this._executionContextPromise;
      }
      /**
       * If the function passed to the `worker.evaluate` returns a Promise, then
       * `worker.evaluate` would wait for the promise to resolve and return its
       * value. If the function passed to the `worker.evaluate` returns a
       * non-serializable value, then `worker.evaluate` resolves to `undefined`.
       * DevTools Protocol also supports transferring some additional values that
       * are not serializable by `JSON`: `-0`, `NaN`, `Infinity`, `-Infinity`, and
       * bigint literals.
       * Shortcut for `await worker.executionContext()).evaluate(pageFunction, ...args)`.
       *
       * @param pageFunction - Function to be evaluated in the worker context.
       * @param args - Arguments to pass to `pageFunction`.
       * @returns Promise which resolves to the return value of `pageFunction`.
       */
      async evaluate(pageFunction, ...args) {
          return (await this._executionContextPromise).evaluate(pageFunction, ...args);
      }
      /**
       * The only difference between `worker.evaluate` and `worker.evaluateHandle`
       * is that `worker.evaluateHandle` returns in-page object (JSHandle). If the
       * function passed to the `worker.evaluateHandle` returns a `Promise`, then
       * `worker.evaluateHandle` would wait for the promise to resolve and return
       * its value. Shortcut for
       * `await worker.executionContext()).evaluateHandle(pageFunction, ...args)`
       *
       * @param pageFunction - Function to be evaluated in the page context.
       * @param args - Arguments to pass to `pageFunction`.
       * @returns Promise which resolves to the return value of `pageFunction`.
       */
      async evaluateHandle(pageFunction, ...args) {
          return (await this._executionContextPromise).evaluateHandle(pageFunction, ...args);
      }
  }
  //# sourceMappingURL=WebWorker.js.map