Andreas Kling bdffc9e7fb LibJS: Support array holes, encoded as empty JS::Value ...

This patch adds a new kind of JS::Value, the empty value.
It's what you get when you do JSValue() (or most commonly, {} in C++.)

An empty Value signifies the absence of a value, and should never be
visible to JavaScript itself. As of right now, it's used for array
holes and as a return value when an exception has been thrown and we
just want to unwind.

This patch is a bit of a mess as I had to fix a whole bunch of code
that was relying on JSValue() being undefined, etc.

2020-04-06 20:27:44 +02:00

9.3 KiB

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