better-npm-init
Version:
A better version of npm init, with templates and more. Usage: better-npm-init <template> [--yarn] [--install] [--git] [--yes] [--help]
20 lines (18 loc) • 485 B
JavaScript
function incrementListIndex(current, dir, opt) {
const len = opt.choices.realLength;
const shouldLoop = 'loop' in opt ? Boolean(opt.loop) : true;
if (dir === 'up') {
if (current > 0) {
return current - 1;
}
return shouldLoop ? len - 1 : current;
}
if (dir === 'down') {
if (current < len - 1) {
return current + 1;
}
return shouldLoop ? 0 : current;
}
throw new Error('dir must be up or down');
}
module.exports = incrementListIndex;