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We have lots of new changes for you! # What's Changed ## General - We updated Luau's license year to 2025! - We fixed a bug where large amounts of errors were being printed when deep intersections of unions error. ## Require-by-String This release introduces the `Luau.Require` library, which exposes the runtime semantics of require-by-string, including support for the new `@self` alias described in [this RFC](https://github.com/luau-lang/rfcs/pull/109). The library operates on a virtualized filesystem, allowing consumers to specify navigation rules without assuming a filesystem context. Documentation in `Require.h` explains how to enable the library, and the `setupState` function in Repl.cpp demonstrates how we've integrated it into the luau CLI tool. Note that the interface in `Require.h` is written in C, which enables any application written in a language with a C foreign-function interface to link against this library and enable require-by-string. This makes it straightforward for any application embedding Luau to support require-by-string, provided that it defines or operates within an environment resembling a virtual filesystem. The core navigation semantics of require-by-string have additionally been pulled into the `Luau.RequireNavigator` library. While `Luau.Require` internally depends on `Luau.RequireNavigator`, the latter does not depend on the Luau VM. This library provides an interface for inspecting require-by-string's navigation behavior and therefore serves as a useful dependency for static tooling. Documentation for `Luau.RequireNavigator` is available in `RequireNavigator.h`. ## Autocomplete - We fixed a memory leak in fragment autocomplete! ## New Solver And Old Solver - We've found a infinite iteration error over a type pack. We added a way to detect this error and throw an `InternalCompileError` instead. - We fix `table.freeze` not accounting for the first argument not getting type stated. We fall back to regular inference instead. - We fix a crash in the old solver with `length_error`. - We fix a crash in the new solver stemming from generalization reentrancy. Now we correctly generalize interior free types that do not appear in a function signature. - We fix a nil refinement. (Fixes https://github.com/luau-lang/luau/issues/1687 and https://github.com/luau-lang/luau/issues/1451) ### Internal Contributors Co-authored-by: Andy Friesen <afriesen@roblox.com> Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: Talha Pathan <tpathan@roblox.com> Co-authored-by: Varun Saini <vsaini@roblox.com> Co-authored-by: Vighnesh Vijay <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> Full Changelog: https://github.com/luau-lang/luau/compare/0.668...0.669 --------- Co-authored-by: Hunter Goldstein <hgoldstein@roblox.com> Co-authored-by: Varun Saini <61795485+vrn-sn@users.noreply.github.com> Co-authored-by: Alexander Youngblood <ayoungblood@roblox.com> Co-authored-by: Aviral Goel <agoel@roblox.com> Co-authored-by: Vighnesh <vvijay@roblox.com> Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com> Co-authored-by: Ariel Weiss <aaronweiss@roblox.com> |
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.. | ||
Anyification.h | ||
ApplyTypeFunction.h | ||
AstJsonEncoder.h | ||
AstQuery.h | ||
Autocomplete.h | ||
AutocompleteTypes.h | ||
BuiltinDefinitions.h | ||
Cancellation.h | ||
Clone.h | ||
Constraint.h | ||
ConstraintGenerator.h | ||
ConstraintSolver.h | ||
ControlFlow.h | ||
DataFlowGraph.h | ||
DcrLogger.h | ||
Def.h | ||
Differ.h | ||
Documentation.h | ||
EqSatSimplification.h | ||
EqSatSimplificationImpl.h | ||
Error.h | ||
FileResolver.h | ||
FragmentAutocomplete.h | ||
Frontend.h | ||
Generalization.h | ||
GlobalTypes.h | ||
InferPolarity.h | ||
InsertionOrderedMap.h | ||
Instantiation.h | ||
Instantiation2.h | ||
IostreamHelpers.h | ||
JsonEmitter.h | ||
Linter.h | ||
LValue.h | ||
Metamethods.h | ||
Module.h | ||
ModuleResolver.h | ||
NonStrictTypeChecker.h | ||
Normalize.h | ||
NotNull.h | ||
OverloadResolution.h | ||
Polarity.h | ||
Predicate.h | ||
Quantify.h | ||
RecursionCounter.h | ||
Refinement.h | ||
RequireTracer.h | ||
Scope.h | ||
Set.h | ||
Simplify.h | ||
Substitution.h | ||
Subtyping.h | ||
Symbol.h | ||
TableLiteralInference.h | ||
ToDot.h | ||
TopoSortStatements.h | ||
ToString.h | ||
Transpiler.h | ||
TxnLog.h | ||
Type.h | ||
TypeArena.h | ||
TypeAttach.h | ||
TypeChecker2.h | ||
TypeCheckLimits.h | ||
TypedAllocator.h | ||
TypeFunction.h | ||
TypeFunctionReductionGuesser.h | ||
TypeFunctionRuntime.h | ||
TypeFunctionRuntimeBuilder.h | ||
TypeFwd.h | ||
TypeInfer.h | ||
TypeOrPack.h | ||
TypePack.h | ||
TypePairHash.h | ||
TypePath.h | ||
TypeUtils.h | ||
Unifiable.h | ||
Unifier.h | ||
Unifier2.h | ||
UnifierSharedState.h | ||
VisitType.h |