Fix #6127: Drop followAlias #6294
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FollowAlias would return the bounds of a constraint type variable instead of the variable itself. This meant that constrain result in adapt would almost always return true for an expected type that was a type variable instead of adding a constraint for it.
It turns out we don't need it anymore. This is nice, since `followAlias` did some fairly ad-hoc rewritings.
nicolasstucki
approved these changes
Apr 16, 2019
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FollowAlias would return the bounds of a constraint type variable
instead of the variable itself. This meant that constrain result
in adapt would almost always return true for an expected type that
was a type variable instead of adding a constraint for it.