Alessander França Alessander França - 20 days ago 5
Javascript Question

grunt babel is not working

I'm trying to transpile es6 to es5 but it is not working.

My Gruntfile.js

module.exports = function(grunt){
"use strict";

grunt.loadNpmTasks('grunt-babel');

grunt.initConfig({
"babel": {
options: {
sourceMap: true
},
dist: {
files: {
"dist/app.js": "app.js"
}
}
}
});

grunt.registerTask("default", ["babel"]);
}


when I run grunt the file dist/app.js is the the same off app.js

Is anything wrong?

Answer

I found the error.

I had to intall babel-preset-es2015 : npm install -D babel-preset-es2015

and config the babel inside package.json.

{
  "name": "babel",
  "version": "0.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "babel": {
    "presets": [
      "es2015"
    ]
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-cli": "^6.1.18",
    "babel-preset-es2015": "^6.1.18",
    "babelify": "^7.2.0",
    "grunt": "^0.4.5",
    "grunt-babel": "^6.0.0",
    "grunt-browserify": "^4.0.1",
    "grunt-contrib-watch": "^0.6.1",
    "load-grunt-tasks": "^3.3.0"
  }
}