import { Option } from "./option.js";
export interface WaitingForValueProps<T> {
    readonly presetValue?: Option<T>;
}
export declare class WaitingForValue<T = void> {
    #private;
    constructor(opts?: WaitingForValueProps<T>);
    init(presetValue?: Option<T>): void;
    setValue(value: Option<T>): void;
    setError(err: Error): void;
    waitValue(): Promise<T>;
    value(): Option<T>;
}
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