export type SimulateProgressOptions = {
    /**
     * How long do we expect the operation to take normally?
     * Will be used to calculate the step size.
     * @default 1000
     */
    expectedDurationMs?: number;
    /**
     * How often should we update the progress?
     * @default 100
     */
    intervalMs?: number;
};
export type ProgressHandler = (progress: number, uncapped: number) => void;
export default function simulateProgress<T>(promise: Promise<T>, onProgress: ProgressHandler, { expectedDurationMs, intervalMs }?: SimulateProgressOptions): Promise<T>;
/**
 * Scale the progress towards a target progress.
 */
export declare function towards(targetProgress: number, callback: ProgressHandler): ProgressHandler;
/**
 * Create a progress handler that grows endlessly
 * using a dampened hyperbolic curve to slow down.
 */
export declare function endless(callback: ProgressHandler): ProgressHandler;
/**
 * Dampened hyperbolic function.
 *
 * @see https://www.desmos.com/calculator/irwmspbofr
 * @returns
 */
export declare function dampenedHyperbolic(x: number): number;