Memoize module make functions

[rehno-lindeque]

I've been investigating the loading for our elm widgets...

It appears to me that when several widgets are instantiated (embedded), repeated calls to make for a large module is very slow. In particular, Bootstrap.Html.make() takes a large amount of time:

One way of testing this quickly is as follows:

for (var i = 0; i < 100; ++i) {
    Elm.Bootstrap.Html.make({});
}

The above takes 12.68s on my laptop.

One quick solution might be to memoize the make function. The generated function currently looks like this...

Elm.Bootstrap.Html.make = function (_elm) { ... }

...I'm not 100% sure if it would be necessary to memoize the function based on the incoming _elm environment, but it seems like that shouldn't be necessary. One edge case is if someone is uses different versions of the same package for different embedded widgets.

[rehno-lindeque]

Oops wrong place for this issue: moved to elm/compiler#888

[rehno-lindeque]

Oops wrong place for this issue: moved to elm/compiler#888