Function block

packages/core/src/utils/index.ts:34–85

({
	input = stdin,
	output = stdout,
	overwrite = true,
	hideCursor = true,
}: BlockOptions = {})

}

export function block({
	input = stdin,
	output = stdout,
	overwrite = true,
	hideCursor = true,
}: BlockOptions = {}) {
	const rl = readline.createInterface({
		input,
		output,
		prompt: '',
		tabSize: 1,
	});
	readline.emitKeypressEvents(input, rl);

	if (input instanceof ReadStream && input.isTTY) {
		input.setRawMode(true);
	}

	const clear = (data: Buffer, { name, sequence }: Key) => {
		const str = String(data);
		if (isActionKey([str, name, sequence], 'cancel')) {
			if (hideCursor) output.write(cursor.show);
			process.exit(0);
			return;
		}
		if (!overwrite) return;
		const dx = name === 'return' ? 0 : -1;
		const dy = name === 'return' ? -1 : 0;

		readline.moveCursor(output, dx, dy, () => {
			readline.clearLine(output, 1, () => {
				input.once('keypress', clear);
			});
		});
	};
	if (hideCursor) output.write(cursor.hide);
	input.once('keypress', clear);

	return () => {
		input.off('keypress', clear);
		if (hideCursor) output.write(cursor.show);

		// Prevent Windows specific issues: https://github.com/bombshell-dev/clack/issues/176
		if (input instanceof ReadStream && input.isTTY && !isWindows) {
			input.setRawMode(false);
		}

		// @ts-expect-error fix for https://github.com/nodejs/node/issues/31762#issuecomment-1441223907
		rl.terminal = false;
		rl.close();
	};
}

export const getColumns = (output: Writable): number => {
	if ('columns' in output && typeof output.columns === 'number') {