/**
 * CLI main orchestration - error handling and stream setup.
 *
 * This layer:
 * - Sets up output streams (for testability)
 * - Handles EPIPE errors gracefully (pipe closed by consumer)
 * - Handles top-level errors with proper formatting
 * - Coordinates between the thin shell (cli.ts) and core logic (run.ts)
 */
/**
 * Setup signal handlers for graceful shutdown.
 *
 * - SIGINT (Ctrl-C): First press shows message, second force exits with code 130
 * - SIGTERM: Clean exit with code 143 (128 + 15)
 *
 * Exit codes follow standard Unix conventions:
 * - 130 = 128 + SIGINT (2)
 * - 143 = 128 + SIGTERM (15)
 */
export declare function setupSignalHandlers(stderr: NodeJS.WritableStream, exit: (code: number) => void): void;
/**
 * Handle EPIPE errors gracefully (pipe closed by consumer like head/grep).
 * This is normal when piping to commands that don't consume all output.
 */
export declare function handlePipeErrors(stream: NodeJS.WritableStream, exit: (code: number) => void): void;
export type CliMainArgs = {
    argv: string[];
    env: Record<string, string | undefined>;
    stdout: NodeJS.WritableStream;
    stderr: NodeJS.WritableStream;
    exit: (code: number) => void;
    setExitCode: (code: number) => void;
};
export declare function runCliMain(args: CliMainArgs): Promise<void>;
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