/**
 * Request context for propagating metadata (requestId, etc.) across async boundaries.
 *
 * The consumer (e.g., backend) must call setContextStorage() with an AsyncLocalStorage
 * instance before any requests are processed. The logger package itself has zero
 * Node.js-specific imports, so it works in any environment.
 */
interface ContextStorage {
    run(context: Record<string, any>, fn: () => void): void;
    getStore(): Record<string, any> | undefined;
}
/**
 * Inject the async context storage (call once at app startup).
 * In Node.js: pass `new AsyncLocalStorage()` from `node:async_hooks`.
 */
export declare function setContextStorage(s: ContextStorage): void;
/**
 * Run a function within a request context.
 * All loggers called within fn will automatically include the context metadata.
 */
export declare function runWithContext(context: Record<string, any>, fn: () => void): void;
/**
 * Get the current request context (if any).
 */
export declare function getContext(): Record<string, any> | undefined;
export {};
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