README.md

JavaScript File Set Loader

Loads your javascript files, resolves dependencies.

Usage Example

// *** PASTE COMPRESSED CODE FROM `js-fileset-loader.min.js` HERE ***

var productionFileSet = {
  'js-build/app.min.js'
};

var developmentFileSet = {
  'deps/react.js': [],
  'deps/react-dom.js': ['deps/react.js'],
  'js-build/queue-animations.js': ['deps/react.js', 'deps/react-dom.js']
}

var environment = (location.host === 'localhost:8000') ? 'development' : 'production';
loadJsFileSet(environment === 'development' ? developmentFileSet : productionFileSet, function () {});

Creating the minified version

The minified file js-fileset-loader.min.js has been compressed with the Closure Compiler using simple optimizations.

js-fileset-loader.js

/* see https://gist.github.com/timjb/4ea31d652813867970d3 */

var loadJsFileSet = (function () {
  var loadingState = {};
  
  var loading = 1, loaded = 2;

  function loadJsFile (src, cb) {
    var script = document.createElement('script');
    script.src = src;
    script.async = true;
    script.onload = cb;
    var ref = document.getElementsByTagName("script")[0];
    ref.parentNode.insertBefore(script, ref);
  }

  return function (jsFileSet, cb) {
    var allLoaded = true;
    Object.keys(jsFileSet).forEach(function (jsFile) {
      if (loadingState[jsFile] === loaded) { return; }
      allLoaded = false;
      if (loadingState[jsFile] === loading) { return; }
      var deps = jsFileSet[jsFile];
      for (var i = 0; i < deps.length; i++) {
        if (loadingState[deps[i]] !== loaded) { return; }
      }
      // all dependencies are loaded
      loadingState[jsFile] = loading;
      loadJsFile(jsFile, function () {
        loadingState[jsFile] = loaded;
        console.log('loaded `' + jsFile + '`')
        loadJsFileSet(jsFileSet, cb);
      });
    });
    if (allLoaded) { cb(); }
  };
})();

js-fileset-loader.min.js

/* https://goo.gl/km1j9V */
var loadJsFileSet=function(){function h(c,d){var b=document.createElement("script");b.src=c;b.async=!0;b.onload=d;var a=document.getElementsByTagName("script")[0];a.parentNode.insertBefore(b,a)}var c={};return function(e,d){var b=!0;Object.keys(e).forEach(function(a){if(2!==c[a]&&(b=!1,1!==c[a])){for(var g=e[a],f=0;f<g.length;f++)if(2!==c[g[f]])return;c[a]=1;h(a,function(){c[a]=2;console.log("loaded `"+a+"`");loadJsFileSet(e,d)})}});b&&d()}}();

LICENSE.txt

        DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE 
                    Version 2, December 2004 

 Copyright (C) 2004 Sam Hocevar <[email protected]> 

 Everyone is permitted to copy and distribute verbatim or modified 
 copies of this license document, and changing it is allowed as long 
 as the name is changed. 

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE 
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 

  0. You just DO WHAT THE FUCK YOU WANT TO.