import { type FocusXCallback } from './shared';
/**
 * Start timer command payload definition.
 */
type StartTimer = FocusXCallback & {
    /**
     * The type of session to start.
     */
    type?: 'focus' | 'break';
    /**
     * Duration in minutes.
     */
    duration?: number;
};
/**
 * Start the Focus timer.
 *
 * @param payload Start timer command payload.
 * @returns Focus start timer URL.
 * @example
 * startTimer()
 * // => 'focusapp://start-timer'
 * @example
 * startTimer({ duration: 20 })
 * // => 'focusapp://start-timer?duration=20'
 * @example
 * startTimer({ type: 'focus', duration: 40 })
 * // => 'focusapp://start-timer?type=focus&duration=40'
 * @link https://meaningful-things.com/tutorial/2023/5/11/focus-url-scheme
 */
export declare function startTimer(payload?: StartTimer): string;
export {};