Install git commit hooks after npm install using grunt

If you working on larger teams it good be a good idea to run some code quality tools before some commit. This can be done by a pre-commit hook. But how to make sure everyone has the same hook in there project. We can copy them direct after a project was build with npm install. There are scripts block in the package.json where we can declare commands or scripts that will be executed at a specific event, for example install, postinstall or uninstall.

So in our case we want copy a pre-commit file from our project into the .git/hooks folder.The minimal grunt file would look like this:

module.exports = function(grunt) {

  grunt.initConfig({
    "copy": {
      "hooks": {
        "files": {
           // copy the pre-commit file from the hooks folder in the project into the .git/hooks folder
           ".git/hooks/pre-commit": "hooks/pre-commit"
        }
      }
    }
  });
  grunt.loadNpmTasks('grunt-contrib-copy');
}

and in the package.json file we add a scripts section with a post install script that just calls the grunt task:

"scripts": {
  "postinstall": "grunt copy:hooks"
}