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Swasthik K
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Fail Fast in Nx Using --nxBail
Understand how the --nxBail flag works in Nx and how it helps stop task execution immediately on failure
19 Jan 2026
When running multiple tasks in Nx, such as lint, test, or build, Nx normally continues executing all tasks even if one of them fails.
This behavior is useful for collecting all errors, but it can also waste time—especially when a failure already means the run should be stopped.
The --nxBail flag changes this behavior by enabling fail-fast execution.
#What --nxBail does
When you pass --nxBail=true, Nx will:
- Monitor all running tasks
- Immediately stop scheduling or running remaining tasks
- Exit as soon as the first task fails
This means you get faster feedback and avoid unnecessary work.
#Example
bash
npx nx run-many -t lint test build --parallel=3 --nxBail=true