This fixes two closure bugs.
First, we had special cased `__awaiter` from days of yore, when we had
special cased its capture. I also think we were confused at some point
and instead of fixing the fact that we captured `this` for non-arrow
functions, which `__awaiter` would trigger, we doubled down on this
incorrect hack. This means we missed a real bonafide `this` capture.
Second, we had a global cache of captured variable objects. So, if a
free variable resolved to the same JavaScript object, it always resolved
to the first serialization of that object. This is clearly wrong if
the object had been mutated in the meantime. The cache is required to
reach a fixed point during mutually recursive captures, but we should
only be using it for the duration of a single closure serialization
call. That's precisely what this commit does.
Also add a fix for this case.
This fixespulumi/pulumi#663.
The two-phase output properties change broke the ability to recover
from a failed replacement that yields pending deletes in the checkpoint.
The issue here is simply that we should remember pending registrations
only for logical operations that *also* have a "new" state (create or
update). This commit fixes this, and also adds a new step test with
fault injection to probe many interesting combinations of steps.
