Method unmount

packages/@ant/ink/src/core/ink.tsx:1589–1669

(error?: Error | number | null)

  }

  unmount(error?: Error | number | null): void {
    if (this.isUnmounted) {
      return;
    }

    this.onRender();
    this.unsubscribeExit();

    if (typeof this.restoreConsole === 'function') {
      this.restoreConsole();
    }
    this.restoreStderr?.();

    this.unsubscribeTTYHandlers?.();

    // Non-TTY environments don't handle erasing ansi escapes well, so it's better to
    // only render last frame of non-static output
    const diff = this.log.renderPreviousOutput_DEPRECATED(this.frontFrame);
    writeDiffToTerminal(this.terminal, optimize(diff));

    // Clean up terminal modes synchronously before process exit.
    // React's componentWillUnmount won't run in time when process.exit() is called,
    // so we must reset terminal modes here to prevent escape sequence leakage.
    // Use writeSync to stdout (fd 1) to ensure writes complete before exit.
    // We unconditionally send all disable sequences because terminal detection
    // may not work correctly (e.g., in tmux, screen) and these are no-ops on
    // terminals that don't support them.
    /* eslint-disable custom-rules/no-sync-fs -- process exiting; async writes would be dropped */
    if (this.options.stdout.isTTY) {
      if (this.altScreenActive) {
        // <AlternateScreen>'s unmount effect won't run during signal-exit.
        // Exit alt screen FIRST so other cleanup sequences go to the main screen.
        writeSync(1, EXIT_ALT_SCREEN);
      }
      // Disable mouse tracking — unconditional because altScreenActive can be
      // stale if AlternateScreen's unmount (which flips the flag) raced a
      // blocked event loop + SIGINT. No-op if tracking was never enabled.
      writeSync(1, DISABLE_MOUSE_TRACKING);
      // Drain stdin so in-flight mouse events don't leak to the shell
      this.drainStdin();
      // Disable extended key reporting (both kitty and modifyOtherKeys)
      writeSync(1, DISABLE_MODIFY_OTHER_KEYS);
      writeSync(1, DISABLE_KITTY_KEYBOARD);
      // Disable focus events (DECSET 1004)
      writeSync(1, DFE);
      // Disable bracketed paste mode
      writeSync(1, DBP);
      // Show cursor
      writeSync(1, SHOW_CURSOR);
      // Clear iTerm2 progress bar
      writeSync(1, CLEAR_ITERM2_PROGRESS);
      // Clear tab status (OSC 21337) so a stale dot doesn't linger
      if (supportsTabStatus()) writeSync(1, wrapForMultiplexer(CLEAR_TAB_STATUS));
    }
    /* eslint-enable custom-rules/no-sync-fs */

    this.isUnmounted = true;