import { TypeDuration } from "../types/type-duration";
import { Primitive } from "./primitive";
export declare class Duration extends Primitive {
    type: typeof TypeDuration;
    _nanos: bigint | null;
    constructor(value: string | null);
    asSeconds(): number | null;
    asMs(): number | null;
    asNanos(): bigint | null;
    toJS(): number | null;
}
export declare const Nanosecond: bigint;
export declare const Microsecond: bigint;
export declare const Millisecond: bigint;
export declare const Second: bigint;
export declare const Minute: bigint;
export declare const Hour: bigint;
export declare const Day: bigint;
export declare const Week: bigint;
export declare const Year: bigint;