export declare class NoNamespaceException extends Error {
    constructor(message?: string);
}
export declare class InvalidKeyException extends Error {
    constructor(key: string);
}
export declare const isRequestScopeEnabled: () => boolean;
export declare const getRequestScopeValueOrDefault: <T>(key: string, defaultVal: T) => T;
export declare const getRequestScopeValue: <T>(key: string) => T | null;
export declare const getRequestScopeValueRequired: <T>(key: string) => T;
export declare const setRequestScopeValue: <T>(key: string, value: T) => T;
export declare const clearRequestScopeValue: (key: string) => void;