Open cannalee90 opened 6 years ago
https://stackoverflow.com/questions/27715275/whats-the-difference-between-returning-value-or-promise-resolve-from-then
https://www.google.co.kr/search?q=promise.prototype.then&oq=promise.prototype.then&aqs=chrome..69i57j69i58j0l3.4734j0j7&sourceid=chrome&ie=UTF-8
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/then
https://stackoverflow.com/questions/27715275/whats-the-difference-between-returning-value-or-promise-resolve-from-then