/**
 * Flush and close a Bun child-process input pipe before awaiting the child.
 *
 * Bun's FileSink.end() is asynchronous. Leaving its promise unobserved can
 * keep the write half open after the payload has arrived, so a remote process
 * that reads until EOF never advances.
 */
export declare function writeAndCloseProcessInput(input: {
    write(value: string | Uint8Array): unknown;
    end(): unknown;
}, value: string | Uint8Array): Promise<void>;