import { type BrowserClient } from '../client.js';
import { type SupportedBrowsers, type HookOrder, type TargetMetric, type ChromiumMetricObserver } from '../../types/index.js';
export declare class ChromiumDevelopmentTools implements BrowserClient {
    private readonly options;
    /**
     * Chrome dev tools protocol client
     */
    private readonly clients;
    /**
     * Chrome dev tools target for metadata extraction
     */
    private readonly targets;
    /**
     * Lock to indicate if connection request is going on
     */
    private readonly connectLock;
    /**
     * Indicates if all options are correctly set for connection
     */
    private areClientOptionsValid;
    /**
     * @inheritdoc
     */
    constructor(options: Record<string, any>);
    /**
     * @inheritdoc
     */
    connect(): Promise<void>;
    /**
     * @inheritdoc
     */
    getMetric(metric: ChromiumMetricObserver, hookOrder: HookOrder): Promise<TargetMetric[]>;
    /**
     * Cleans up client connection.
     * If `targetId` is not provided, then all clients are destroyed.
     *
     * @param {string=} targetId id to indicate which client to destroy
     */
    destroy(targetId?: string): Promise<void>;
    /**
     * @inheritdoc
     */
    getBrowserName(): SupportedBrowsers;
    /**
     * Fetch metric for a target
     *
     * @param targetId target to fill
     * @param targetMetric mapping of all targets
     * @param metric type of metric or observer
     * @param hookOrder hook order
     */
    private runPredefinedMetricFetch;
    /**
     * Builds options object to use for CDP
     *
     * @param {string=} targetId id to specify target to run CDP on
     */
    private buildOptions;
    /**
     * Check client to target and create new connection if not available
     *
     * @param target reference to run CDP commands on
     */
    private connectToTarget;
    /**
     * Runs every plugin for a metric.
     *
     * @param targetId target to fill
     * @param metric
     */
    private runPlugins;
}