Gruntfile.js

module.exports = function (grunt) {
  grunt.loadNpmTasks('grunt-babel')
  grunt.loadNpmTasks('grunt-contrib-clean')
  grunt.loadNpmTasks('grunt-contrib-copy')
  grunt.loadNpmTasks('grunt-sass')
  grunt.loadNpmTasks("grunt-ts")

  grunt.initConfig({

    clean: ['dist'],

    copy: {
      src_to_dist: {
        cwd: 'src',
        expand: true,
        src: ['**/*', '!**/*.ts', '!**/*.js', '!**/*.scss'],
        dest: 'dist'
      },
      pluginDef: {
        expand: true,
        src: ['README.md'],
        dest: 'dist'
      }
    },

    watch: {
      rebuild_all: {
        files: ['src/**/*', 'README.md'],
        tasks: ['default'],
        options: {spawn: false}
      }
    },

    babel: {
      options: {
        sourceMap: true,
        presets: ['es2015'],
        plugins: ['transform-es2015-modules-systemjs']
      },
      dist: {
        files: [{
          cwd: 'src',
          expand: true,
          src: ['**/*.js'],
          dest: 'dist',
          ext: '.js'
        }]
      }
    },

    ts: {
      default : {
        tsconfig: './tsconfig.json',
        options: {
          skipLibCheck: true
        }
      }
    },

    sass: {
      options: {
        sourceMap: true
      },
      dist: {
        files: {
          'dist/css/monasca.dark.css': 'src/sass/monasca.dark.scss',
          'dist/css/monasca.light.css': 'src/sass/monasca.light.scss'
        }
      }
    }

  })

  grunt.registerTask('default', ['clean', 'sass', 'copy', 'babel', 'ts'])
}