import { MicroSeconds_number } from '@oaklean/profiler-core';
export declare class TraceEventHelper {
    private static _started;
    private static _profilerStartTime;
    /**
     * Starts a trace event session to capture V8 trace events.
     */
    private static startTraceEventSession;
    private static post;
    /**
     * Handles the 'dataCollected' event from the NodeTracing domain.
     * @param chunk - The data chunk containing trace event information.
     */
    private static onDataCollected;
    /**
     * Starts capturing trace events related to CPU profiling.
     */
    static startCapturingProfilerTracingEvents(): Promise<void>;
    /**
     * Stops capturing trace events related to CPU profiling.
     */
    static stopTraceEventSession(): Promise<void>;
    /**
     * Retrieves the high-resolution timestamp when CPU profiling began.
     * @returns The high-resolution timestamp in microseconds.
     * @throws Error if the start time could not be captured after multiple attempts.
     */
    static getCPUProfilerBeginTime(): Promise<MicroSeconds_number>;
}