[9point6]

To be fair, that context parameter has only just been removed as part of 4.0.0. Instead they recommend you change your code to be of the form:

    _.each(collection, _.bind(function, context))

Which actually seems a lot more correct than some arbitrary context parameter

[vkjv]

How is it arbitrary? It's part of the ES spec.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

I'm honestly curious why this is being removed?

[9point6]

Ah, I actually didn't realise this was the case, I've always used `.bind(this)` for this kind of thing.