Lodash sometimes loads and overwrites _, breaking various modules

[tophtucker]

_.functions is not a function
_.contains is not a function
_.flatten is not a function

_.VERSION
"4.13.1"

This usually but not always happens. Looks like a recent version of Lodash removed contains as an alias. Seems like sometimes Lodash loads and overwrites this version of Underscore. But I can't figure out how Lodash is even getting on the page lol.

I can take more of a look later.

cc @aubergene @blacki <3

[tophtucker]

Well wait now we broke the video hahaha

[BVP] BloombergVideoPlayer: TypeError: _.cloneDeep is not a function
    at new e (app.js:4)
    at Function.value (app.js:4)
    at t.value (app.js:5)

And I think @1wheel's fix is a race condition thing, so like 1 in 20 times the video works and nothing else does. (I shoulda grabbed the log that 1 time out of 20 but it basically just looked like before the fix...)

[tophtucker]

I guess there's no way to exactly future-proof this when it's loading arbitrary ad code, but I feel like we should bite the bullet and do a big find-and-replace with a _.noConflict() rename to something other than _...

[1wheel]

what about:

!(function(){
  var orginalUnderscore = _
  d3.timer(function(){
    _.groupBy = orginalUnderscore.groupBy
    _.flatten = orginalUnderscore.flatten
  })
})();