prepack

• Fix referentialization of optimized functions
• Fix serialization issues for nested optimized functions
• Model aliasing effects for array loop operators
• Fix dependency issues with cyclic prototype dependencies
• Fix problem where a bind call can use a variable before its definition
• Speed up visitor by skipping redundant generator scopes

• Bugfixes
• User-level stack overflows no longer crash prepack
• Website shows warnings when Prepack produces diagnostics

• Fixed bugs that could cause generated code to throw
• Improved evaluation of abstract conditionals
• Added CLI options --warnaserror, --diagnosticaserror, --nodiagnostic
• Added full support for React.Children.map mock

Highlights: Make simplification more robust when complexity limits are reached reduces loop iteration counter to 6 before bailing out We weren’t using the correct initializerAstNodeName in two places Tease apart expressions vs. statements for operation descriptors Simplify equality expressions where types are known Refactor AbstractObjectValue to use evaluateWithAbstractConditional Allow in...

Fixes #2419 #2386 #2439 #2447 #2432 #2437 #2442

• Fix havoced binding not in optimized function
• Allow arrays with widened numeric properties to update index properties
• Fix nested for statement bailout with nested for-in
• Don’t record modified bindings for immutable bindings when havocing