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3 changes: 3 additions & 0 deletions release-notes.md
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[Commits](https://github.com/kpdecker/jsdiff/compare/v5.1.0...master)

- [#411](https://github.com/kpdecker/jsdiff/pull/411) Big performance improvement. Previously an O(n) array-copying operation inside the innermost loop of jsdiff's base diffing code increased the overall worst-case time complexity of computing a diff from O(n²) to O(n³). This is now fixed, bringing the worst-case time complexity down to what it theoretically should be for a Myers diff implementation.
- [#351](https://github.com/kpdecker/jsdiff/issues/351) Importing from the lib folder - e.g. `require("diff/lib/diff/word.js")` - will work again now. This had been broken for users on the latest version of Node since Node 17.5.0, which changed how Node interprets the `exports` property in jsdiff's `package.json` file.

## v5.1.0

- [#365](https://github.com/kpdecker/jsdiff/issues/365) Allow early termination to limit execution time with degenerate cases
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