/**
 * Wrapper over JS timers that allows re-scheduling them
 * to earlier time
 */
export declare class EarlyTimer {
    private _timeout?;
    private _timeoutTs?;
    private _handler;
    constructor();
    /**
     * Emit the timer when the event loop is idle
     * (basically `queueMicrotask()`)
     */
    emitWhenIdle(): void;
    /**
     * Emit the timer before the next given milliseconds
     *
     * Shorthand for `emitBefore(performance.now() + ms)`
     *
     * @param ms  Milliseconds to schedule for
     */
    emitBeforeNext(ms: number): void;
    /**
     * Emit the timer before the given time
     *
     * @param ts  timestamp in ms relative to `performance.timeOrigin`
     */
    emitBefore(ts: number): void;
    /**
     * Emit the timer right now
     */
    emitNow(): void;
    /**
     * Cancel the timer
     */
    reset(): void;
    /**
     * Set timeout handler
     */
    onTimeout(handler: () => void): void;
}