bun.sh/docs/test/hot.md

To automatically re-run tests when files change, use the --watch flag:

$ bun test --watch

Bun will watch for changes to any files imported in a test file, and re-run tests when a change is detected.

It's fast.

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"bun test --watch url" in a large folder with multiple files that start with "url" pic.twitter.com/aZV9BP4eFu

— Jarred Sumner (@jarredsumner) March 29, 2023

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