Show HN: LoadJS – A tiny async loader for modern browsers | Hacker News Reader

Show HN: LoadJS – A tiny async loader for modern browsers

github.com

21 pointsandres8 comments

Very nice! It reminds me of these two loader experiments: https://curiosity-driven.org/amd-loader-with-promises https://curiosity-driven.org/minimal-loader

But for production builds I highly recommend Almond: https://github.com/jrburke/almond

There's also https://github.com/systemjs/systemjs which aims to implement the ES6 Module Loader.

This seems like just a reimplementation of AMD, a baby RequireJS

Seems so, a good thing since there's not a lot of different implementations (I'm not very knowledgeable here).

late ps: recently ported a 2K ugly codebase (50% of global state mutation) under requirejs/AMD. It was indescribably good. Everything nicely scoped, no leakage. All of a sudden refactoring became a bliss.

I find myself using scriptjs (on which this is based) to download browserify bundles for libraries which we don't want on every page load and also to load external API libraries which we want to fetch directly from their publisher (e.g. Mozilla Persona.)

It looks like webpack solves the first problem (http://webpack.github.io/docs/code-splitting.html) but for external unmanaged libraries they recommend scriptjs.

I'd been using $script for quite a while until I noticed that it was executing callbacks even when the dependency didn't load. After looking at the source code, I realized that it's because it was designed to work with legacy browsers that don't have onerror callbacks. Since I'm only focused on modern browsers and $script isn't maintained anymore, I wrote LoadJS to add success/fail callback support.

LoadJS is an extremely lightweight async loader/dependency manager that is meant to be embedded on every pageload. It has a payload size of 590 bytes (minified + gzipped).

RequireJS is a fully-featured dependency manager that works in legacy browsers. It has a payload size of 6.2KB (minified + gzipped).

https://github.com/bricss/dope

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