Description

Prefer Array.from(arrayLike, mapFn) over Array.from(arrayLike).map(...)

Prefer directly using Array.from mapFn argument instead of an extra map.

This is supposed to improve performances.

Fail

const foo = Array.from(bar).map(baz);

const foo = Array.from(bar).map((element, i) => baz(element, i));

Pass

const foo = Array.from(bar, baz);

const foo = Array.from(bar, (element, i) => baz(element, i));

Proposed rule name

prefer-array-from-map-fn

Additional Info

This should be automatically fixable by the --fix CLI option.

This looks 🤔 a bit related to:

• #2045
• #1714