@ably/cli/dist/src/utils/readline-helper.js

Ably CLI for Pub/Sub, Chat and Spaces

// import inquirer from 'inquirer'; // Unused - kept for documentation
/**
 * Helper function to safely run inquirer prompts in interactive mode
 * while preserving readline state and terminal settings.
 *
 * This prevents issues with arrow keys showing escape sequences (^[[A)
 * after inquirer prompts in interactive mode.
 */
export async function runInquirerWithReadlineRestore(promptFn, interactiveReadline) {
    if (!interactiveReadline) {
        // Not in interactive mode, just run the prompt normally
        return await promptFn();
    }
    // Pause readline and save its state
    interactiveReadline.pause();
    const lineListeners = interactiveReadline.listeners('line');
    interactiveReadline.removeAllListeners('line');
    // Save terminal settings if available
    const stdin = process.stdin;
    const isRaw = stdin.isRaw;
    try {
        // Run the inquirer prompt
        const result = await promptFn();
        // Give inquirer time to clean up its terminal state
        await new Promise(resolve => setTimeout(resolve, 10));
        return result;
    }
    finally {
        // Restore terminal settings
        if (stdin.isTTY && isRaw !== undefined) {
            stdin.setRawMode(isRaw);
        }
        // Restore line listeners
        lineListeners.forEach((listener) => {
            interactiveReadline.on('line', listener);
        });
        // Resume readline with a small delay to ensure terminal is ready
        setTimeout(() => {
            interactiveReadline.resume();
            // Force readline to redraw its prompt to ensure proper state
            if ('_refreshLine' in interactiveReadline) {
                const rlWithRefresh = interactiveReadline;
                if (rlWithRefresh._refreshLine) {
                    rlWithRefresh._refreshLine();
                }
            }
        }, 20);
    }
}