Jamie Tanna d91e6088ff fixup! test: set up mutation testing with Stryker
The `mutation-pr`/`mutation-full` CI jobs were failing outright, and a
full `stryker run` never got past the initial dry run, so none of this
was actually usable yet.

- `mutation.yml`: pin all actions to a commit SHA, add a `permissions`
  block, set `persist-credentials: false`, and pass the base ref/changed
  files through `env` instead of interpolating them into the shell
  script directly (zizmor was flagging all of these). Also switch to the
  project's own `./.github/actions/setup-node` composite action instead
  of `pnpm/action-setup`/`actions/setup-node` (which additionally
  referenced a non-existent `.node-version` file), and fix the `pnpm
  mutation`/`pnpm stryker run --mutate` calls to use the actual
  `test:mutation`/`test:mutation:changed` script names.
- Drop the now-unused `@stryker-mutator/typescript-checker` dependency,
  left over from when `stryker.config.json` still had `checkers:
  ["typescript"]`.
- `lib/util/timestamp.ts`: the local-timezone-offset fallback used in
  `asTimestamp()` was cached in a module-level constant computed once at
  import time. Combined with vitest's `threads` pool (used by Stryker's
  vitest-runner) not reliably honouring a `process.env.TZ` set from our
  own `test/setup.ts`, this made `asTimestamp()` parse plain dates (e.g.
  Jenkins' `buildDate: 'Jan 02, 2020'`) using the host's real timezone
  instead of UTC. Compute the offset per call instead, and set `TZ=UTC`
  in the actual environment via the `test:mutation*` scripts, since that's
  the one thing that reliably works across pools.
- `test/setup.ts`: restore real timers in a top-level `afterAll`, so a
  spec that leaves fake timers running (there's at least one) can't leak
  a frozen clock into whichever spec runs next in the same worker -
  something that's only reachable under low-concurrency/single-threaded
  execution.
- Raise `dryRunTimeoutMinutes` and the global vitest `testTimeout`: our
  full suite's per-test coverage instrumentation run took ~25 minutes
  end-to-end, well past Stryker's 5 minute default, and a couple of
  CPU-heavy specs (WASM PGP crypto) timed out under that contention too.
- Ignore `.stryker-tmp/` (Stryker's sandbox dir, which can survive an
  interrupted run) in ls-lint/oxlint/biome/prettier/vitest, since a
  leftover sandbox copy of the repo was otherwise picked up as extra
  source/test files and broke those tools outright.

Co-Authored-By: Claude Sonnet 5 <jamie.tanna+claude-code@mend.io>
2026-09-10 15:38:01 +01:00
2017-01-15 17:23:34 +01:00
2022-02-04 20:29:47 +01:00
2024-03-14 13:48:17 +00:00
2026-05-09 07:13:04 +00:00

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Renovate is an automated dependency update tool. It helps to update dependencies in your code without needing to do it manually. When Renovate runs on your repo, it looks for references to dependencies (both public and private) and, if there are newer versions available, Renovate can create pull requests to update your versions automatically.

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