Fix exposed requires being persisted across bundles #1030
Merged
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As mentioned in the comments on issue #908 #908 (comment),
expose
d files were being persisted across calls to browserify. I tracked this down to a leak where modules were being appended to the (module) global builtins object. Fixed with a test, though I'm not sure if you want a test for such a fine grained bug, so feel free to remove it, but it does demonstrate the failure & subsequent pass with this fix.