immerjs / immer / 18515105801 / 1

45%

main: 43%

Pull #1183

github

Replace recursive tree finalization with targeted callbacks

Ported Mutative's "finalization callback" approach as a more targeted and performant implementation for finalization compared to the existing recursive tree traversal approach:

- Added cleanup callbacks for each draft that's created
- Added callbacks to handle root drafts, assigned values, and recursing
  inside of plain values
- Updated state creation to return [draft, state] to avoid a lookup
- Rewrote patch generation system to work with callbacks instead of
  during tree traversal

605 of 635 branches covered (95.28%)

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