import { vi } from 'vitest';
export type MockStdout = NodeJS.WriteStream & {
    isTTY: boolean;
    columns: number;
    rows: number;
    emit(event: string, ...args: unknown[]): boolean;
    on(event: string, listener: (...args: unknown[]) => void): MockStdout;
};
export type MockStdin = NodeJS.ReadStream & {
    isTTY: boolean;
    isRaw: boolean;
    setRawMode: ReturnType<typeof vi.fn>;
    emit(event: string, ...args: unknown[]): boolean;
};
export declare function makeMockStdout(isTTY?: boolean): MockStdout;
export declare function makeMockStdin(isTTY?: boolean): MockStdin;
export declare function collectWrites(stream: MockStdout): {
    all: () => string;
    clear: () => void;
};