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ci: run mutation testing on manual dispatch only #5

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Merged
Mearman merged 1 commit into from
Sep 29, 2026
Merged

ci: run mutation testing on manual dispatch only #5

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6 changes: 4 additions & 2 deletions .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,8 @@ jobs:

mutation:
name: Mutation
# Manual only: run it from the Actions tab (workflow_dispatch) when a change warrants a full mutation pass. It is not a required check and does not gate a release.
if: github.event_name == 'workflow_dispatch'
needs: determine-runner
runs-on: ${{ fromJson(needs.determine-runner.outputs.selected-runner) }}
timeout-minutes: 60
Expand Down Expand Up @@ -174,7 +176,7 @@ jobs:

required-checks:
name: Required Checks
needs: [determine-runner, commitlint, lint, typecheck, package, mutation]
needs: [determine-runner, commitlint, lint, typecheck, package]
# Always runs, even if a dependency failed, so it reports that failure itself rather than being skipped: a required check that is silently absent blocks a PR indefinitely instead of failing it visibly.
if: always()
runs-on: ${{ fromJson(needs.determine-runner.outputs.selected-runner) }}
Expand All @@ -190,7 +192,7 @@ jobs:

release:
name: Release
needs: [commitlint, lint, typecheck, package, mutation]
needs: [commitlint, lint, typecheck, package]
if: github.ref == 'refs/heads/main' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch')
# Deliberately a GitHub-hosted runner, not the resolved one: npm trusted publishing only works from GitHub-hosted runners, so the OIDC token exchange cannot happen on the self-hosted fleet or Blacksmith.
runs-on: ubuntu-latest
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -129,7 +129,7 @@ pnpm lint:check # eslint, check only; what CI runs
pnpm typecheck
pnpm test # vitest, with coverage
pnpm build # tsdown: ESM, CJS and declarations
pnpm test:mutation # Stryker, with a 100% break threshold
pnpm test:mutation # Stryker, with a 100% break threshold; CI runs it on manual dispatch only
```

CI also runs `pnpm exec publint` and `pnpm exec attw --pack` after the build. It also installs the packed tarball into a scratch project on each supported Node line and both cosmiconfig majors, and loads a config with `extends` through it as ESM and as CommonJS.
Expand Down