Gruntfile.js

module.exports = function ( grunt ) {

	var composer = grunt.file.readJSON( 'composer.json' ),
		dependencies = [];

	for ( var dep in composer.require ) {
		dependencies.push( 'vendor/' + dep );
	}

	var delete_patterns = [".git/**", "tests/**", ".gitignore", "**.md", "Gruntfile.js", "example-functions.php", "composer.{json,lock}", "{.travis,.scrutinizer,codeception*,}.yml", "coverage.clover", "phpunit.xml.dist"],
		clean_dist_patterns = ['vendor/composer/installed.json'],
		git_add_patterns = ['vendor/autoload*.php', 'vendor/composer/{autoload_*,ClassLoader*}.php'];

		for ( i = 0; i < dependencies.length; i++ ) {
			git_add_patterns.push( dependencies[i] + '**' );
			for ( k = 0; k < delete_patterns.length; k++ ) {
				clean_dist_patterns.push( dependencies[i] + '/' + delete_patterns[k] );
			}
		}

	grunt.initConfig( {
		pkg: grunt.file.readJSON( 'package.json' ),
		clean: {
			dist: clean_dist_patterns,
			'pre-update': dependencies
		},
		gitadd: {
			dist: {
				options: {
					verbose: true,
					force: true
				},
				files: {
					src: git_add_patterns
				}
			}
		}
	} );

	grunt.loadNpmTasks( 'grunt-contrib-clean' );
	grunt.loadNpmTasks( 'grunt-git' );

	grunt.registerTask( 'pre-composer-update', ['clean:pre-update'] );
	grunt.registerTask( 'after-composer-update', ['clean:dist', 'gitadd:dist'] );
};