/**
 * Timeout and abort-signal helpers shared by the axios, fetch, and stream
 * transports. Kept dependency-free so every transport resolves request
 * cancellation the same way.
 */
export declare function applyAbortControllerSignal(opts: Record<string, any>): void;
/**
 * Returns request options augmented with an abort signal derived from the
 * effective timeout. Per-service timeout overrides the global one; an existing
 * `signal` is never replaced.
 */
export declare function applyTimeout(options: Record<string, any>, serviceTimeout: number | undefined, globalTimeout: number | undefined): Record<string, any>;