declare type BooleanLike = undefined | null | boolean;
declare type Condition = () => BooleanLike | Promise<BooleanLike>;
declare type Action = () => void;
interface Options {
    timeout?: number;
    retries?: number;
    alwaysResolve?: boolean;
    backoff?: boolean;
}
export declare function when(condition: Condition, actionOrOptions?: Action | Options, maybeOptions?: Options): Promise<void>;
export {};