import { CacheAge } from '../types/CacheAge';
export declare class CacheControl {
    readonly enabled: boolean;
    private directives;
    name: string;
    protected constructor(enabled?: boolean, directives?: Record<string, boolean | CacheAge | undefined>);
    static disabled: () => CacheControl;
    static OneSecond: () => CacheControl;
    static fiveSeconds: () => CacheControl;
    static tenSeconds: () => CacheControl;
    static thirtySeconds: () => CacheControl;
    static sixtySeconds: () => CacheControl;
    static custom: (maxAge?: CacheAge, staleWhileRevalidate?: CacheAge) => CacheControl;
    readonly maxAge: (ca?: CacheAge) => this;
    readonly sharedMaxAge: (ca?: CacheAge) => this;
    readonly noCache: (a?: boolean) => this;
    readonly mustRevalidate: (a?: boolean) => this;
    readonly private: (a?: boolean) => this;
    readonly public: (a?: boolean) => this;
    readonly immutable: (a?: boolean) => this;
    readonly staleWhileRevalidate: (ca?: CacheAge) => this;
    value: () => string;
    toString(): string;
}