export type RequestContext = {
    requestId: string;
    clientId?: string;
    requestSource?: string;
    /**
     * Allow using the context as a key-value store.
     * Prefer SessionStorage.get()/set() over direct property access for ad-hoc keys.
     */
    [key: string]: unknown;
};
export declare class SessionStorage {
    static getRequestContext(): RequestContext | undefined;
    static get<T = unknown>(key: string): T | undefined;
    static has(key: string): boolean;
    static delete(key: string): boolean;
    static runWithRequestContext(initial: Partial<RequestContext>, fn: () => void): void;
}