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@github-actions github-actions released this 03 Oct 16:32
0.694
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Learn about vigilant mode.

What's Changed?

This week we have improvements in new type solver inference, performance optimizations for the new type solver as well as fixes for optimization passes in native code generation.

  • Fixed the order of errors returned by Frontend::getCheckResult with accumulateNested flag
  • Typechecker now uses userdata instead of class as the extern type name

New Type Solver

  • When a string is passed to a function expecting an argument that might be a string singleton, bidirectional type inference will choose the lower bound (string literal) for that argument (Fixes #2010)
  • Fixed incorrect definition of vector.lerp (Fixes #2024)
  • Added error suppression in type path traversal. Without it, errors with *error-type* were sometimes visible (Fixes #1840)
  • Fixed another case of combinatorial explosion in union type normalization which could have caused a hang
  • Fixed a crash on out-of-bounds access during for..in statement typechecking

Runtime

  • Fixed an assertion in native code generation in a sequence of nil and boolean stores to a local
  • Fixed incorrect lowering in rare cases when LuauCodegenDirectCompare was enabled

Internal Contributors

Co-authored-by: Andy Friesen afriesen@roblox.com
Co-authored-by: Annie Tang annietang@roblox.com
Co-authored-by: Ariel Weiss aaronweiss@roblox.com
Co-authored-by: Hunter Goldstein hgoldstein@roblox.com
Co-authored-by: Ilya Rezvov irezvov@roblox.com
Co-authored-by: Vyacheslav Egorov vegorov@roblox.com

Full Changelog: 0.693...0.694

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