import type { Clock } from '../contract/index.ts';
import type { Wanted } from '../being/index.ts';
export declare const DEFAULT = 30000;
export declare const CEILING = 300000;
export declare const allow: (wanted: Wanted | undefined) => number;
export declare const LATE: unique symbol;
export type Late = typeof LATE;
export declare class Bell {
    #private;
    constructor(clock: Clock, ms: number);
    get rang(): boolean;
    race<T>(work: Promise<T>): Promise<T | Late>;
    cancel(): void;
}