We also favor using const as a default for everything in our team's code. When someone uses let, it's right away obvious that the reference will change. One c

We also favor using const as a default for everything in our team's code. When someone uses let, it's right away obvious that the reference will change. One case that surprised me a bit is that it's correct to use const in for-of loop, e.g. for (const a of arr) {}