System.js Cache-Busting Extension / how-to use script tokens across your Systemjs app - System.js doesn't provide a way to request a cache-busting version of a script in it's care. This handles it in a fairly simple way, and enables use of static tokens in dependency lists, rather cumbersome paths. I've provided some AMD module usage sampling as…

example-usage.js

require([System.setPath('myModule')], function(mM) {
    ...
};
define([System.setPath('myModuleDep')], function(mM) {
    ...
};
import mMDep from System.setPath('myModuleDep');

system.js.config.js

// Sample Systemjs Config

// Somehow, provide a unique build identifier to System.cbv
System.cbv = '54321'; // or namspace.cbv
// you'll not be able to use alias' in these paths because they will themselves become maps
System.setPath('myModule', 'modules/MYMODULE/templates/js/myModule.source.js');
System.setPath('myModuleDep', 'modules/MYMODULE/templates/js/myModuleDep.source.js');
var config = {
  map: {
    'myModule': System.setPath('myModule'),
    'myModuleDep': System.setPath('myModuleDep')
  }
  meta: {}
};
// as of System.js v0.20.* you'll definetely need to tell meta your intensions per-module
// note I couldn't get wildcarding to work, hence the individual setPath's
config.meta[System.setPath('myModule')] = {format: 'amd'};
config.meta[System.setPath('myModuleDep')] = {format: 'amd'};
System.config(config);
delete window.config;

system.js.extn.js

// a getter/setter for your new tokenized paths
// enables centralized attachment of a cache-busting query parameter accross your app
System.setPath = function(token, path) {
    if (! path) {
        if (this.cbPaths[token]) {
            return this.cbPaths[token] + (!! ~this.cbPaths[token].indexOf('?') ? '&' : '?') + 'cbv=' + this.cbv;
        }
    } else {
        this.cbPaths[token] = path;
    }
    
    return token;
}

System.cbv = '';
System.cbPaths = {};