Preprocessor to compile ES6 JavaScript on the fly using traceur-compiler for Ember Rocks.
Install karma-ember-rocks-traceur as a devDependency for your project:
npm install karma --save-dev
npm install karma-ember-rocks-traceur --save-devThe following example configuration shows some of the required settings for enabling Traceur support. Traceur compiles source files into either AMD or Node.js modules. Since Karma is testing in a browser you need to configure RequireJS.
// karma.conf.js
module.exports = function(config) {
config.set({
// at a minimum need requirejs + emberRocksTraceur
frameworks: ['mocha', 'requirejs', 'emberRocksTraceur'],
preprocessors: {
'src/**/*.es6': ['emberRocksTraceur']
},
files: [
{pattern: 'src/**/*.es6', included: false},
{pattern: 'test/**/*Spec.es6', included: false},
'test/test-main.js'
],
// default configuration, not required
traceurPreprocessor: {
// options passed to the traceur-compiler
// see traceur --longhelp for list of options
options: {
sourceMaps: false,
modules: 'amd'
}
}
});
};Traceur is an ES6 to ES5 transpiler, and as such, does not support older browsers without ES5 support like IE8 or PhantomJS. (This is the case for any Traceur-compiled code, not just that produced by karma-ember-rocks-traceur.)
For more information on Karma see the homepage.
Karma Ember Rocks Traceur was based on Karma Ember Rocks Traceur to be using the ember-rocks;