Collect Magento 2 JS dependencies as directed graph

collect.js

// Compatible with requirejs/alameda
let dependencies = Object.values(require.contexts._.deferreds).map((m) => {

	if (m.hasOwnProperty('deps')) {
        return m.deps.map((d) => {
            return [m.map.id, d.id];
        });
	} else {
		 return [];
	}
}).filter((x) => {return x.length > 0;} );
let merged = [].concat.apply([], dependencies);
let modules = [].concat.apply([], merged).filter((v, i, a) => a.indexOf(v) === i);