Which prompt most clearly bounds a generated change?

Which prompt most clearly bounds a generated change?

1. Update parseLimit in src/paging.js; edit it and its test only; preserve omitted and zero inputs; add no dependency; run node test/paging.test.js and git diff --check; stop if another file is required.
2. Improve pagination and keep everything compatible.
3. Use a clean class design, refactor as needed, and test thoroughly.
4. Fix parseLimit without making unnecessary changes.