Summary:
The assert at the end of parseAssignmentExpression to make sure
that the `checkEndAssignmentExpression` function was kept up to date
would result in crashes if invalid JS was provided to the parser.
To avoid this, we turn that assertion into an actual check with an error,
so that we will report the correct failure.
Now, if the `checkEndAssignmentExpression` function comes out of date,
the parser will report an error instead of crashing but the signal will
still indicate to update `checkEndAssignmentExpression`.
Reviewed By: tmikov
Differential Revision: D17371201
fbshipit-source-id: 473a95b29700349b31c7bab99daf1311de3bd871
Andres Suarez
Riley Dulin
Aakash Patel