luau/Analysis/include/Luau
menarulalam a8d14596e7
Sync to upstream/release/669 (#1770)
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>
2025-04-11 17:44:21 -07:00
..
Anyification.h Sync to upstream/release/637 (#1354) 2024-08-02 07:30:04 -07:00
ApplyTypeFunction.h Sync to upstream/release/600 (#1076) 2023-10-20 18:10:30 -07:00
AstJsonEncoder.h Sync to upstream/release/539 (#625) 2022-08-04 15:35:33 -07:00
AstQuery.h Sync to upstream/release/636 (#1346) 2024-07-26 10:47:49 -07:00
Autocomplete.h Sync to upstream/release/651 (#1513) 2024-11-08 13:41:45 -08:00
AutocompleteTypes.h Sync to upstream/release/651 (#1513) 2024-11-08 13:41:45 -08:00
BuiltinDefinitions.h Sync to upstream/release/666 (#1747) 2025-03-21 14:43:00 -07:00
Cancellation.h Sync to upstream/release/584 (#977) 2023-07-14 11:08:53 -07:00
Clone.h Sync to upstream/release/664 (#1715) 2025-03-07 10:07:27 -08:00
Constraint.h Sync to upstream/release/667 (#1754) 2025-03-28 16:15:46 -07:00
ConstraintGenerator.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
ConstraintSolver.h Sync to upstream/release/667 (#1754) 2025-03-28 16:15:46 -07:00
ControlFlow.h Support Control Flow type Refinements for "break" and "continue" statements (#1004) 2023-09-21 15:28:42 -07:00
DataFlowGraph.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
DcrLogger.h Sync to upstream/release/637 (#1354) 2024-08-02 07:30:04 -07:00
Def.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
Differ.h Sync to upstream/release/637 (#1354) 2024-08-02 07:30:04 -07:00
Documentation.h Sync to upstream/release/544 (#669) 2022-09-08 15:14:25 -07:00
EqSatSimplification.h Sync to upstream/release/651 (#1513) 2024-11-08 13:41:45 -08:00
EqSatSimplificationImpl.h Sync to upstream/release/662 (#1681) 2025-02-21 10:24:12 -08:00
Error.h Sync to upstream/release/645 (#1440) 2024-09-27 11:58:21 -07:00
FileResolver.h Sync to upstream/release/665 (#1732) 2025-03-14 13:11:24 -07:00
FragmentAutocomplete.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
Frontend.h Sync to upstream/release/668 (#1760) 2025-04-04 14:11:51 -07:00
Generalization.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
GlobalTypes.h Sync to upstream/release/666 (#1747) 2025-03-21 14:43:00 -07:00
InferPolarity.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
InsertionOrderedMap.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
Instantiation.h Sync to upstream/release/649 (#1489) 2024-10-25 16:15:01 -04:00
Instantiation2.h Sync to upstream/release/653 (#1541) 2024-11-22 13:00:51 -08:00
IostreamHelpers.h Sync to upstream/release/600 (#1076) 2023-10-20 18:10:30 -07:00
JsonEmitter.h Sync to upstream/release/549 (#707) 2022-10-14 12:48:41 -07:00
Linter.h Sync to upstream/release/637 (#1354) 2024-08-02 07:30:04 -07:00
LValue.h Sync to upstream/release/600 (#1076) 2023-10-20 18:10:30 -07:00
Metamethods.h Sync to upstream/release/593 (#1024) 2023-09-01 10:58:27 -07:00
Module.h Sync to upstream/release/668 (#1760) 2025-04-04 14:11:51 -07:00
ModuleResolver.h Sync to upstream/release/646 (#1458) 2024-10-04 11:29:55 -07:00
NonStrictTypeChecker.h Sync to upstream/release/667 (#1754) 2025-03-28 16:15:46 -07:00
Normalize.h Sync to upstream/release/655 (#1563) 2024-12-13 13:02:30 -08:00
NotNull.h Sync to upstream/release/555 (#768) 2022-12-02 10:09:59 -08:00
OverloadResolution.h Sync to upstream/release/655 (#1563) 2024-12-13 13:02:30 -08:00
Polarity.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
Predicate.h Sync to upstream/release/600 (#1076) 2023-10-20 18:10:30 -07:00
Quantify.h Sync to upstream/release/665 (#1732) 2025-03-14 13:11:24 -07:00
RecursionCounter.h Sync to upstream/release/558 (#796) 2023-01-06 13:14:35 -08:00
Refinement.h Sync to upstream/release/664 (#1715) 2025-03-07 10:07:27 -08:00
RequireTracer.h Sync to upstream/release/662 (#1681) 2025-02-21 10:24:12 -08:00
Scope.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
Set.h Sync to upstream/release/641 (#1382) 2024-08-30 13:16:51 -07:00
Simplify.h Sync to upstream/release/660 (#1643) 2025-02-07 16:17:11 -08:00
Substitution.h Sync to upstream/release/631 (#1299) 2024-06-20 16:37:55 -07:00
Subtyping.h Sync to upstream/release/655 (#1563) 2024-12-13 13:02:30 -08:00
Symbol.h Sync to upstream/release/588 (#992) 2023-07-28 08:13:53 -07:00
TableLiteralInference.h Sync to upstream/release/664 (#1715) 2025-03-07 10:07:27 -08:00
ToDot.h Sync to upstream/release/600 (#1076) 2023-10-20 18:10:30 -07:00
TopoSortStatements.h Sync to upstream/release/503 (#135) 2021-11-05 08:47:21 -07:00
ToString.h Sync to upstream/release/651 (#1513) 2024-11-08 13:41:45 -08:00
Transpiler.h Sync to upstream/release/504 (#200) 2021-11-12 06:27:34 -08:00
TxnLog.h Sync to upstream/release/668 (#1760) 2025-04-04 14:11:51 -07:00
Type.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
TypeArena.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
TypeAttach.h Sync to upstream/release/501 (#20) 2021-11-01 14:52:34 -07:00
TypeChecker2.h Sync to upstream/release/666 (#1747) 2025-03-21 14:43:00 -07:00
TypeCheckLimits.h Sync to upstream/release/588 (#992) 2023-07-28 08:13:53 -07:00
TypedAllocator.h Sync to upstream/release/541 (#644) 2022-08-18 14:32:08 -07:00
TypeFunction.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
TypeFunctionReductionGuesser.h Sync to upstream/release/635 (#1337) 2024-07-19 11:20:47 -07:00
TypeFunctionRuntime.h Sync to upstream/release/666 (#1747) 2025-03-21 14:43:00 -07:00
TypeFunctionRuntimeBuilder.h Sync to upstream/release/666 (#1747) 2025-03-21 14:43:00 -07:00
TypeFwd.h Sync to upstream/release/634 (#1325) 2024-07-12 10:03:36 -07:00
TypeInfer.h Sync to upstream/release/661 (#1664) 2025-02-14 13:57:46 -08:00
TypeOrPack.h Sync to upstream/release/602 (#1089) 2023-11-03 16:45:04 -07:00
TypePack.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
TypePairHash.h Sync to upstream/release/601 (#1084) 2023-10-27 14:18:41 -07:00
TypePath.h Sync to upstream/release/666 (#1747) 2025-03-21 14:43:00 -07:00
TypeUtils.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
Unifiable.h Sync to upstream/release/653 (#1541) 2024-11-22 13:00:51 -08:00
Unifier.h Sync to upstream/release/663 (#1699) 2025-02-28 14:42:30 -08:00
Unifier2.h Sync to upstream/release/669 (#1770) 2025-04-11 17:44:21 -07:00
UnifierSharedState.h Sync to upstream/release/662 (#1681) 2025-02-21 10:24:12 -08:00
VisitType.h Sync to upstream/release/658 (#1625) 2025-01-24 12:15:19 -08:00