2017 Loader Re-Write

[cycomachead]

Lunch Time thoughts..

• [ ] Replace SetTimeout w/ an onload for each script, that calls the section loaded function, and the load next section function if everything is good
• [ ] Add a hook for scripts that can be conditionally loaded, based on a CSS selector or function.

More difficult stuff:

• [ ] define script dependencies and linearize a DAG
• [ ] allow all scripts to be loaded, but don't execute them until dependencies are loaded (requires adapting each script to not execute code immediately.

[cycomachead]

That last part is mostly done.

Perhaps we can define a module syntax?

llab.modules = {
   curriculum: {
      dependencies: ['jQuery', 'library'],
      path: 'src/curriculum.js',
      onLoad: function() {},
      ...,
  },
};

This feels like reinventing the wheel. Maybe a build system is still just easier. :/

Then we can have a meta onLoad function that checks if dependencies are ready and if so calls the onLoad for that module. Then if the dependencies aren't ready, it can create callbacks.