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RELEASING.md

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# Releasing

We use Github Actions for releases.

How a release works

Releases trigger when the repository recieves the custom repository_dispatch event release-triggered.

This triggers the publish.yml workflow, which in turn triggers the release.sh script in scripts/ci. The workflow will also create a github release with an appropriate changelog.

Having the release triggered by a custom event is useful for automating releases in the future (eg for version bumps in pact dependencies).

Release.sh

This script is not intended to be run locally. Note that it modifies your git settings.

The script will:

  • Modify git authorship settings
  • Confirm that there would be changes in the changelog after release
  • Run Lint
  • Run Build
  • Run Test
  • Commit an appropriate version bump, changelog and tag
  • Package and publish to npm
  • Push the new commit and tag back to the main branch.

Should you need to modify the script locally, you will find it uses some dependencies in scripts/ci/lib.

Kicking off a release

You must be able to create a github access token with repo scope to the pact-js-core repository.

  • Set an environment variable GITHUB_ACCESS_TOKEN_FOR_PF_RELEASES to this token.
  • Make sure master contains the code you want to release
  • Run scripts/trigger-release.sh

Then wait for github to do its magic. It will release the current head of master.

Note that the release script refuses to publish anything that wouldn't produce a changelog. Please make sure your commits follow the guidelines in CONTRIBUTING.md

If the release fails

The publish is the second to last step, so if the release fails, you don't need to do any rollbacks.

However, there is a potential for the push to fail after a publish if there are new commits to master since the release started. This is unlikely with the current commit frequency, but could still happen. Check the logs to determine if npm has a version that doesn't exist in the master branch.

If this has happened, you will need to manually put the release commit in.

npm run release # This tags, commits and updates the changelog only

Depending on the nature of the new commits to master after the release, you may need to rebase them on top of the tagged release commit and force push.

Releasing Pact Node Manually

If any changes needs to be released, let it be dependencies or code, you must have access to push directly to master on the pact-js-core repo, then follow these steps:

  • Run npm ci --ignore-scripts to confirm that the dependencies are appropriately configured.
  • Run npm test first to make sure all tests pass. This will also build and download the appropriate checksums.
  • Run npm run release to generate the changelog and create a tagged commit
  • Run npm publish --access public --tag latest to publish to npm.
  • Push the commit and the tag to the origin using git push --follow-tags