🏠 New in High Baseline Support: Array by copy

January 4, 2026

caniuse · mdn · [spec]([‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.toreversed’, ‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.tosorted’, ‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.tospliced’, ‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.with’, ‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-%25typedarray%25.prototype.toreversed’, ‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-%25typedarray%25.prototype.tosorted’, ‘https://tc39.es/ecma262/multipage/indexed-collections.html#sec-%25typedarray%25.prototype.with’])

The toReversed(), toSorted(), toSpliced(), and with() methods of arrays and typed arrays return changed copies of arrays. They stand in contrast to methods such as sort() or reverse() that change arrays in place.

Source features