import { Viewport } from "@itwin/core-frontend";
/** Displays average frames-per-second.
 * NOTE: Enabling fps tracking causes a new frame to render on every tick of the render loop, which may negatively impact battery life.
 * @beta
 */
export declare class FpsTracker {
    private readonly _label;
    private _metrics?;
    private _curIntervalId?;
    private readonly _vp;
    constructor(parent: HTMLElement, viewport: Viewport);
    [Symbol.dispose](): void;
    private clearInterval;
    private toggle;
    private updateFPS;
}
//# sourceMappingURL=FpsTracker.d.ts.map