/**
 * 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 { Protocol } from 'devtools-protocol';
import { CDPSession } from './Connection.js';
import { EventEmitter } from './EventEmitter.js';
import { Target } from './Target.js';
/**
 * @internal
 */
export type TargetFactory = (targetInfo: Protocol.Target.TargetInfo, session?: CDPSession) => Target;
/**
 * @internal
 */
export type TargetInterceptor = (createdTarget: Target, parentTarget: Target | null) => void;
/**
 * TargetManager encapsulates all interactions with CDP targets and is
 * responsible for coordinating the configuration of targets with the rest of
 * Puppeteer. Code outside of this class should not subscribe `Target.*` events
 * and only use the TargetManager events.
 *
 * There are two implementations: one for Chrome that uses CDP's auto-attach
 * mechanism and one for Firefox because Firefox does not support auto-attach.
 *
 * @internal
 */
export interface TargetManager extends EventEmitter {
    getAvailableTargets(): Map<string, Target>;
    initialize(): Promise<void>;
    dispose(): void;
    addTargetInterceptor(session: CDPSession, interceptor: TargetInterceptor): void;
    removeTargetInterceptor(session: CDPSession, interceptor: TargetInterceptor): void;
}
/**
 * @internal
 */
export declare const enum TargetManagerEmittedEvents {
    TargetDiscovered = "targetDiscovered",
    TargetAvailable = "targetAvailable",
    TargetGone = "targetGone",
    /**
     * Emitted after a target has been initialized and whenever its URL changes.
     */
    TargetChanged = "targetChanged"
}
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