While `fixup! ` is fine, `squash! ` means that the commit message needs
tweaking, which cannot be done automatically during merging (i.e. it
should be done by the PR author).
Previously, `validate-commit-message` would always allow
`squash! `-prefixed commits, which would cause problems during merging.
This commit changes `validate-commit-message` to make it configurable
whether such commits are allowed and configures the
`gulp validate-commit-message` task, which is run as part of the `lint`
job on CI, to not allow them.
NOTE: This new check is disabled in the pre-commit git hook that is used
to validate commit messages, because these commits might still be
useful during development.
PR Close#32023
This patch adds the gulp command of `validate-commit-messages`
which will validate the range of commits messages present in the
active branch.
This check now runs on CI as part of the linting checks.
Allowed commit message types and scopes are controlled via commit-message.json file
and documented at https://github.com/angular/angular/blob/master/CONTRIBUTING.md#-commit-message-guidelines
This solution is based on old Vojta's code that he wrote for angular/angular.js, that was later adjusted
by @matsko in #13815.
Ideally we should switch over to something like https://www.npmjs.com/package/commitplease
as suggested in #9953 but that package currently doesn't support strict scope checking,
which is one of the primarily goal of this PR.
Note that this PR removes support for "chore" which was previously overused
by everyone on the team.
Closes#13815Fixes#3337
