Usando promises - JavaScript | MDN
https://developer.mozilla.org/pt-BR/docs/Web/JavaScript/Guide/Using_promises (opens in a new tab)

Padrões

GitHub - airbnb/javascript: JavaScript Style Guide
https://github.com/airbnb/javascript#references (opens in a new tab)

GitHub - ryanmcdermott/clean-code-javascript: Clean Code concepts adapted for JavaScript
https://github.com/ryanmcdermott/clean-code-javascript (opens in a new tab)

GitHub - BrasilAPI/BrasilAPI: Vamos transformar o Brasil em uma API?
https://github.com/BrasilAPI/BrasilAPI (opens in a new tab)

The Quickest Way to Become a Better Developer
https://javascript.plainenglish.io/the-quickest-way-to-become-a-better-developer-715c338a1cee (opens in a new tab)

Útil

30 seconds of code
https://www.30secondsofcode.org/ (opens in a new tab)

Favorite JavaScript utilities in single line of code - 1 LOC
https://1loc.dev/ (opens in a new tab)

JSBEN.CH Performance Benchmarking Playground for JavaScript
http://jsben.ch/ (opens in a new tab)

Simon Høiberg on Twitter: "🔥 Massive JavaScript Compilation 🔥30 Tips on writing better JavaScript, TypeScript and React 👇 / Twitter"
https://twitter.com/SimonHoiberg/status/1501110610314080262 (opens in a new tab)