/**
 * 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 { JSHandle } from "./JSHandle.js";
import { CDPSession } from "./Connection.js";
import { Protocol } from "../../vendor/devtools-protocol/types/protocol.d.ts";
import { EvaluateHandleFn, SerializableOrJSHandle } from "./EvalTypes.js";
/**
 * @internal
 */
export declare type ConsoleAPICalledCallback = (
  eventType: string,
  handles: JSHandle[],
  trace: Protocol.Runtime.StackTrace,
) => void;
/**
 * @internal
 */
export declare type ExceptionThrownCallback = (
  details: Protocol.Runtime.ExceptionDetails,
) => void;
/**
 * 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 declare class WebWorker extends EventEmitter {
  _client: CDPSession;
  _url: string;
  _executionContextPromise: Promise<ExecutionContext>;
  _executionContextCallback: (value: ExecutionContext) => void;
  /**
     *
     * @internal
     */
  constructor(
    client: CDPSession,
    url: string,
    consoleAPICalled: ConsoleAPICalledCallback,
    exceptionThrown: ExceptionThrownCallback,
  );
  /**
     * @returns The URL of this web worker.
     */
  url(): string;
  /**
     * Returns the ExecutionContext the WebWorker runs in
     * @returns The ExecutionContext the web worker runs in.
     */
  executionContext(): Promise<ExecutionContext>;
  /**
     * 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`.
     */
  evaluate<ReturnType extends any>(
    pageFunction: Function | string,
    ...args: any[]
  ): Promise<ReturnType>;
  /**
     * 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`.
     */
  evaluateHandle<HandlerType extends JSHandle = JSHandle>(
    pageFunction: EvaluateHandleFn,
    ...args: SerializableOrJSHandle[]
  ): Promise<JSHandle>;
}
