![]() ![]() However, this service is not available for GitLab. If you use GitHub, this is a great option. A fantastic CI service, pre-commit.ci exists for this purpose. We can help alleviate this problem by applying pre-commit to our CI process. There are still other issues, for example, if someone makes changes directly on the SCM server (for example, using the GitLab Web IDE or in the file editor) Perhaps at your company, you may be able to make sure all your coworkers setup pre-commit before contributing, this is not really a scalable approach for open source projects which may have dozens or hundreds of contributors. If a contributor to your project does not have the same pre-commit hooks installed, they may commit code that will violate your pre-commit hooks. Now, one down-side of pre-commit hooks is that they run exclusively on your system. Now you'll see all the pre-commit hooks pass and the commit is successful! Using pre-commit collaboratively Now we can add the changes and commit again: git add README.md We can use git diff to see the autofix changes. pre-commit has done all the fixes for us. ![]() If we check our README.md file, we'll see that the trailing whitespace has been deleted. Also notice the message: files were modified by this hook and Fixing README.md. Note how the trim trailing whitespace hook has Failed status (as we expected). $ git commit -m "intital commit"Ĭheck yaml.Passedįix end of files.Passed You should see your pre-commit hooks run (you might also see pre-commit initialize these hooks if this is your first time running them). ![]() I'll create a README.md with trailing whitespace - something our pre-commit hook should fix. This will happen automatically any time we run git commit. We're now ready to put our pre-commit configuration to work. Leverage pre-commit in your development workflow Make sure you git add your pre-commit config! git add. This configuration defines two pre-commit hooks: check-yaml and end-of-file-fixer. Rev: v4.1.0 # this is optional, use `pre-commit autoupdate` to get the latest rev! The config file will define, minimally, one or more repos (git repository URLs) containing one or more hooks, and the name of the hook(s) you want to enable. While you can write your own scripts, one of the big advantages of pre-commit is the ecosystem of available hooks made by other people. pre-commit-config.yaml) defines what hooks will run. Pre-commit install # initialize the git hook Let's take this moment to also setup the demo repo: mkdir my-project When you can run pre-commit -help you're ready to move on! check the installation instructions for platform-specific instructions for your platform.
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