Problem: JavaScript's sort method mutates the existing array
Problem: JavaScript's sort method mutates the existing array.
Solution: The new toSorted method.
It returns a new array, and doesn't mutate the existing array.
Two more new JavaScript array methods:
1. toReversed - returns a new array, sorted in reverse order
2. toSpliced - returns a new array without the removed elements, plus added elements
Browser support isn't 100% yet, but you can polyfill via core-js: https://github.com/zloirock/core-js#change-array-by-copy
These array enhancements are part of ES2023.
The other two new ES2023 features:
Hashbang grammar: https://github.com/tc39/proposal-hashbang
Symbols as weakmap keys: https://github.com/tc39/proposal-symbols-as-weakmap-keys