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@ -42,12 +42,14 @@ local x = y
* Luau now infers the result of `Instance:Clone()` much more accurately.
* Luau type guard refinements now support more arbitrary cases, for instance `typeof(foo) ~= "Instance"` eliminates anything not a subclass of Instance.
## Performance improvements
* We optimized the performance of the `Vector3.new` constructor.
* `Vector3.new` constructor has been optimized and is now ~2x faster
* A previously implemented optimization for table size prediction has been enhanced to predict final table size when `setmetatable` is used, such as `local self = setmetatable({}, Klass)`
* Method calls for user-specified objects have been optimized and are now 2-4% faster
* `debug.traceback` is now 1.5x faster, although `debug.info` is likely still superior for performance-conscious code
* Creating table literals with explicit numeric indices, such as `{ [1] = 42 }`, is now noticeably faster, although list-style construction is still recommended.
## Other improvements
* We fixed some GC issues where objects could become "zombies".
* We relaxed the Parallel Lua constraints when dispatching deferred events.
* The existing 'TableLiteral' lint now flags cases when table literals have duplicate numeric indices, such as `{ [1] = 1, [1] = 2 }`