Webstorm: Workaround to enable --harmony flag on node mocha tests

README.md

#Workaround to enable --harmony flag on node mocha tests

1. Create a shell script which runs node with the harmony flag and passes along any other command line arguments sent to the shell script. Mark this script as executable (chmod +x). See 'node-wrapper' for an example bash script.
2. Edit you Mocha 'Run/Debug Configuration' to use the wrapper script as the node interpreter.

harmony-test.js

'use strict';

var expect = require('chai').expect;

function* fibonacci(limit) {
	let previous = 0;
	let current = 1;

	while(previous + current < limit) {
		let temp = previous;
		previous = current;
		yield current = temp + current;
	}
}

// Contrived test to make sure harmony flag is set
describe('harmony', function () {
	it('should have generators', function (done) {
		var expected = [1,2,3,5,8,13,21,34,55,89,144,233,377,610,987];
		var i = 0;
		for (let value of fibonacci(1000)) {
			expect(value).to.equal(expected[i++]);
		}
		expect(i).to.equal(15);
		done();
	});
});

node-wrapper

#!/bin/bash

node --harmony $@

webstorm-settings.png

Nice one =]