fix(vm): handle nil in AsBool with undef vars #866
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Update AsBool implementation to strictly return a boolean value, ensuring that undefined variables are cast to false. Undefined variables resolve to nil when AllowUndefinedVariables is enabled. This adds a new ToBool runtime helper, updates the OpCast VM instruction to support boolean casting, and modifies the compiler to emit this cast when AsBool is used. Adds regression tests. Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
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Update AsBool implementation to strictly return a boolean value, ensuring that undefined variables are cast to false. Undefined variables resolve to nil when AllowUndefinedVariables is enabled. This adds a new ToBool runtime helper, updates the OpCast VM instruction to support boolean casting, and modifies the compiler to emit this cast when AsBool is used. Adds regression tests.
Fixes #830