One operation per line, more or less

[coolaj86]

This is for readability.

We don't want lots of symbols and we don't want clearly distinct, different things happening all together.

Bad Examples

let x = (thing1(), thing2());

if (arr.some(function (el) {
  return el.foo;
})) {
  // do stuff
}

arr.push(await doStuff());

Good Examples

thing1();

let x = thing2();

let hasFoo =  arr.some(function (el) {
  return el.foo;
});

if (hasFoo) {
  // do stuff
}

let result = await doStuff();
arr.push(result);