This is the most awesome JavaScript / TypeScript module loader. It combines the superpowers of:

• SystemJS for in-browser development without any tooling.
• cresolve for fully automatic configuration using Node.js module resolution.

• Looks for node_modules and inside, in the same places Node.js would.
• Automatic UNPKG fallback when a package is not yet installed.
• Handles browser mappings in package.json files.
• Transpiles ES6 using TypeScript compiler (by default).
• Generates SystemJS configuration JSON to easily eliminate dependency on this library and switch to vanilla SystemJS.

Import a main App.ts file from HTML like this:

<script src="//unpkg.com/charto-loader@1/loader.min.js"></script>
<script>

charto.initSystemTS(function() {
	System.import('./App.ts');
});

</script>

You can write ./src/App (.ts or .tsx extension is added) or ./dist/App (.js extension is added) instead. If your project is not TypeScript (but why?), use charto.initSystem and add a first argument with a SystemJS configuration object or configuration file address, setting up a transpiler if necessary.

It loads core-js if Promise support is missing (mainly in IE 11) and SystemJS from a CDN or under node_modules if present. cresolve is included in the loader bundle.

loader.min.js is the minified version, loader.src.js is for debugging without minification.

To print the auto-generated SystemJS configuration, use:

import charto from 'charto-loader';

console.log(JSON.stringify(charto.systemConfig, null, '\t'));

The MIT License

Copyright (c) 2018- BusFaster Ltd