import type CDP from 'chrome-remote-interface';
import { type Metric, type MetricObserver } from '../../../types/index.js';
export declare class HeapDump implements MetricObserver {
    readonly name = "heapDump";
    readonly plugins: import("../../../types/performance.js").MeasurePlugin[];
    /**
     * Options to call `HeapProfiler.takeHeapSnapshot` which are mandatory to collect
     *
     * @private
     */
    private readonly takeHeapSnapshotOptions;
    /**
     * @inheritdoc
     */
    onStart(accumulator: Metric, developmentTools: CDP.Client): Promise<void>;
    /**
     * @inheritdoc
     */
    onSampling(accumulator: Metric, developmentTools: CDP.Client): Promise<void>;
    /**
     * @inheritdoc
     */
    onStop(accumulator: Metric, developmentTools: CDP.Client): Promise<void>;
    /**
     * Common function for onStart and onStop hook
     */
    private common;
    /**
     * Wrapper for `HeapProfiler.takeHeapSnapshot` and check if request was successful
     */
    private takeHeapSnapshot;
    /**
     * Wrapper for `HeapProfiler.addHeapSnapshotChunk` and report response continuously
     */
    private listenForNextChunk;
    /**
     * Wrapper for `HeapProfiler.reportHeapSnapshotProgress` and report response continuously
     */
    private waitForHeapDumpCompletion;
}