How to enable auto update the client logics when changing ES6 code in development environment? - ecmascript-6

Question

Problem: I'm learning ES6 through playing around with the code. I found that it's quite annoying to rebuild and restart the server every time I made any changes.
Goal: I want the changes that I saved to be reflected on the browser, without having to manually rebuild, and restart the server. What's the simplest way to do that?
Background:
The current script configuration in the package.json file is as below.
"scripts": {
"babel": "babel --presets es2015 js/main.js -o build/main.bundle.js",
"start": "http-server -p 9000"
},
I hope this is clear. Thank you!

Answer 1

I believe you must be using gulp tasks to run your project. If so, browser-sync + gulp.watch() is the best option for this. Below is what working for me, add something like below to your gulp task .js file. Whenever you change and save your es6 source code, it will automatically build and refresh the browser.
var gulp = require('gulp');
var browser = require('browser-sync').create();
// your default task goes here that should add "watch-changes" as dependency
// watch changes in js and html files
gulp.task('watch-changes', function() {
browser.init({
// initiate your browser here, refer browser-sync website
});
gulp.watch(
['build/main.bundle.js', 'webapp/**/*.html'],
browser.reload);
});
Check here neat example.
Refer browser-sync website and npm gulp-watch task