JS: Add withoutPropStep and model raw 'await' step with it #9616
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Doing
await x
on non-promise value just returnsx
itself, but our type-tracking steps didn't take this into account, leading to missed flow.This PR adds support for this by adding
PropertySet
andwithoutPropStep(Node pred, Node succ, PropertySet props)
. This steps allows flow frompred -> succ
but without the properties inprops
(see qldoc in PR).This new step is deliberately similar to the
WithoutElement
step that @hvitved added in #8938. (TheWithElement
step is called aloadStoreStep
in JS)Evaluation was quiet