module.exports = function(grunt) { require('load-grunt-tasks')(grunt); var concatAnim; grunt.initConfig({ pkg: grunt.file.readJSON('package.json'), concat: { dist: { src: [ 'source/_base.css', 'source/**/*.css' ], // _base.css required for .animated helper class dest: 'animate.css' } }, autoprefixer: { // https://github.com/nDmitry/grunt-autoprefixer options: { browsers: ['last 2 versions', 'bb 10'] }, no_dest: { src: 'animate.css' // output file } }, cssmin: { minify: { src: ['animate.css'], dest: 'animate.min.css', } }, watch: { css: { files: [ 'source/**/*', 'animate-config.json' ], tasks: ['default'] } } }); // fuction to perform custom task concatAnim = function () { var categories = grunt.file.readJSON('animate-config.json'), category, files, file, target = [ 'source/_base.css' ], count = 0; for ( category in categories ) { if ( categories.hasOwnProperty(category) ) { files = categories[category] for (file in files) { if ( files.hasOwnProperty(file) && files[file] ) { target.push('source/' + category + '/' + file + '.css'); count += 1; } } } } if (!count) { grunt.log.writeln('No animations activated.'); } else { grunt.log.writeln(count + (count > 1 ? ' animations' : ' animation') + ' activated.'); } grunt.config('concat', { 'animate.css': target }); grunt.task.run('concat'); }; // register task grunt.registerTask('concat-anim', 'Concatenates activated animations', concatAnim); // custom task grunt.registerTask('default', ['concat-anim', 'autoprefixer', 'cssmin']); grunt.registerTask('dev', ['watch']); };