Using Grunt with Pattern Lab

gistfile1.txt

module.exports = function(grunt) {

	// Configuration 
	grunt.initConfig({
		pkg: grunt.file.readJSON('package.json'),
		shell: {
			patternlab: {
				command: "php core/builder.php -gp"
			}
        	},
  		watch: {
  			html: {
  				files: ['source/_patterns/**/*.mustache', 'source/_patterns/**/*.json', 'source/_data/*.json'],
  				tasks: ['shell:patternlab'],
  				options: {
  					spawn: false
  				}
  			}
  		}
	});

	// Plugins
	grunt.loadNpmTasks('grunt-contrib-watch');
	grunt.loadNpmTasks('grunt-shell');

	// Tasks
	grunt.registerTask('default', ['watch', 'shell:patternlab']);
};

This is more or less the Gruntfile.js configuration for using Pattern Lab with Grunt.

In order to use Pattern Lab with Grunt, you need to install the Grunt Shell plugin, then set up a task for Pattern Lab to build every time a change is made to a .mustache or .json file.