Testing with Bun in Nx Workspaces

Use this reference for Bun test runner integration details.

Test Target Basics

@nx-bun/nx:test runs tests with Bun’s built-in runner and supports standard Nx invocation.

nx test my-lib
nx test my-lib --watch
nx test my-lib --timeout=10000

Suggested Options

• bail: fail fast to shorten feedback loops.
• timeout: tune per-project for integration-heavy suites.
• watch: local development only.

Coverage and Outputs

• Configure coverage output paths for predictable artifact collection.
• Keep coverage directories under workspace conventions.

Avoiding Jest Conflicts

• Do not maintain duplicate test targets for the same files.
• During migration, keep clear project/path ownership for each runner.

CI Guidance

• Prefer non-watch execution.
• Run nx affected -t test to reduce CI load.
• Record flaky test behavior before and after runner migration.