When comparing SystemJS vs stealjs, the Slant community recommends SystemJS for most people. In the question“What are the best client-side JavaScript module loaders?” SystemJS is ranked 1st while stealjs is ranked 2nd. The most important reason people chose SystemJS is:
SystemJS supports AMD, CommonJS and ES6 modules.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Supports multiple module formats
SystemJS supports AMD, CommonJS and ES6 modules.
Pro Can load static assets through plugins
System.js supports loading static assets such as images or stylesheets through loader plugins.
Pro No tools needed in dev, can seamlessly bundle when moving to prod
Pro Concise, Granular Configuration
Pro Easy to migrate to
A migration from RequireJS + loadCSS to only SystemJS can be done in only 2.5 hours.
Pro Even its dev. build is smaller than most of its competitors prod. build
With ~15Kb, its development build can load almost any type of JS module.
Pro Supports several modules types
StealJS has support for AMD, CJS and ES6 module types.
Pro Support for LESS and CSS
StealJS can also load CSS and LESS files in addition to JavaScript modules.
Pro Mix ES6 AMD and CommonJS
StealJS supports using all three module types, even in the same file.
Pro ES6 module support
StealJs supports ES6 modules and their import
and export
methods without having to compile them to CommonJS require
.
Pro Support for ES6
StealJS supports transpiling of ES6 code to ES5
Pro Supports all systemjs based plugins
Pro Supports source maps for easier debugging
Source maps allow for easier debugging, because they allow you to find the problems within the origin files instead of the output file.
Pro Share the same modules client-side and server-side
Because StealJS allows you to use the same require()
function as node.js, you can easily share modules between the client-side and server-side.
Pro Tap into npm's huge module ecosystem
Using StelaJS opens you up to npm, that has over 80k modules of which a great amount work both client-side and server-side. And the list is growing rapidly.
Cons
Con Changing the order of require statements causes unexpected behavior
Sometimes changing the order of the require
statements in a JavaScript file loaded with stealjs may cause unexpected problems or even breaking the code altogether.