[Javascript] An Introduction to JSPM (JavaScript Package Manager)

JSPM can handle installed packages, transpiling ES6, and bundling all from the command-line. This video gives a quick overview of install JSPM, installing packages with JSPM, writing a very simple app in ES6 that uses those packages, then bundling up for production.

Install:

npm install jspm -g

You can use jspm to install any package:

jspm install --save lodash moment

This will help you to create package.json and you need to select some default options such as transplier: Babel.

We create index.html, to import system.js and config.js files whcih created by jspm. Then use System.js to import the app.js file.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="./jspm_packages/system.js"></script>
    <script src="config.js"></script>
    <script>
        System.import('app');
    </script>
</head>
<body>


</body>
</html>

app.js:

import moment from 'moment';
import _ from 'lodash';

let date = moment().format();

_.forEach(date, char => console.log(char));

In the file we can use ES6 already.

Then when you open the index.html you will see it works.

RUN:

jspm bundle-sfx --minify app

This will create a build.js file,

Replace html with:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="build.js"></script>
</head>
<body>


</body>
</html>

Only includes new build.js file, u will see everything still works.