import Tracer from './tracer';
/**
 * Set the global Tracer.
 *
 * The behavior is undefined if this function is called more than once.
 *
 * @param {Tracer} tracer - the Tracer implementation
 */
export declare function initGlobalTracer(tracer: Tracer): void;
/**
 * Returns the global tracer.
 */
export declare function globalTracer(): Tracer;
//# sourceMappingURL=global_tracer.d.ts.map