Let's say if I have code like this

for (let a of [1.3, 2, 3, 4]) {
  console.log(a);
}

enabling prefer-const rule errors out saying, error ais never modified, useconst instead prefer-const. But if we change that let to const, the value will never change in the loop. Note that this happens only in sloppy and strong mode. In strict mode const works fine. (All these are tested with Node.js v4.1.2).

Is it really safe/okay to suggest changing loop variable to const?

Related: nodejs/node#3152 (comment)

ESLint version: 0.24.0