export declare class HttpContextToken<T> {
    readonly defaultValue: () => T;
    constructor(defaultValue: () => T);
}
export declare class HttpContext {
    private readonly map;
    set<T>(token: HttpContextToken<T>, value?: T): HttpContext;
    get<T>(token: HttpContextToken<T>): T;
    delete(token: HttpContextToken<unknown>): HttpContext;
    has(token: HttpContextToken<unknown>): boolean;
    keys(): IterableIterator<HttpContextToken<unknown>>;
    forEach(fn: (token: HttpContextToken<unknown>, value: unknown) => void): void;
}