import type { TokenSource } from './speakGated.js';
export type DeferredCloseReason = 'complete' | 'interrupted' | 'error';
export interface DeferredTokenSource {
    source: TokenSource;
    push(delta: string): void;
    close(reason?: DeferredCloseReason): void;
    fail(error: unknown): void;
}
export declare function createDeferredTokenSource(): DeferredTokenSource;