Sometimes calculator loads before underscore

[xymostech]

The calculator util depends on underscore, but sometimes it tries to load before underscore has been loaded. They are both loaded on the same line (736 of khan-exercise.js):

Khan.require(["answer-types", "tmpl", "underscore",
    "jquery.adhesion", "hints", "calculator"]);

I am unsure why they are not simply loaded in order, and why it doesn't happen every time. I'm also not sure if putting a dependency would help this or not.

[beneater]

I was able to see this behavior too, but only very rarely and I couldn't figure out how to reproduce it consistently. No idea why these wouldn't be loaded in order. Though it's entirely likely this would never happen in prod because in prod, underscore.js is loaded as part of shared-package, and calculator.js is part of exercise-content-package. Though I really don't understand all the mechanisms going on with how it's all loaded.

[beneater]

@spicyj any idea why modules would load in an order other than the order they're listed?

[sophiebits]

Oh, they're all loaded async. We can make it smarter.

[xymostech]

@spicyj would adding in an underscore dependency for calculator help this?

[sophiebits]

Nope.