🎮 sort() vs toSorted(): watch the reference

Classic methods (sort, reverse, splice) mutate the array and hand back the same reference — so React compares by identity, sees no change, and skips the re-render. ES2023's toSorted, toReversed, toSpliced, with return a new array. Click one and watch result === original flip.

1 · Run a method on the array

⚠️ Mutating — returns the same array

✓ Immutable — returns a new array

with( , priority )

2 · What just happened

Click a method above. You'll see the array it returned, whether the original was mutated, whether result === original, and — the whole point — whether React would re-render.