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ladybird/Libraries/LibJS/Runtime
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Andreas Kling 66fb0a8394 LibRegex/Rust: Add the ECMA-262 regex engine 
Add LibRegex's new Rust ECMAScript regular expression engine.

Replace the old parser's direct pattern-to-bytecode pipeline with a
split architecture: parse patterns into a lossless AST first, then
lower that AST into bytecode for a dedicated backtracking VM. Keep the
syntax tree as the place for validation, analysis, and optimization
instead of teaching every transformation to rewrite partially built
bytecode.

Specialize this backend for the job LibJS actually needs. The old C++
engine shared one generic parser and matcher stack across ECMA-262 and
POSIX modes and supported both byte-string and UTF-16 inputs. The new
engine focuses on ECMA-262 semantics on WTF-16 data, which lets it
model lone surrogates and other JavaScript-specific behavior directly
instead of carrying POSIX and multi-encoding constraints through the
whole implementation.

Fill in the ECMAScript features needed to replace the old engine for
real web workloads: Unicode properties and sets, lookahead and
lookbehind, named groups and backreferences, modifier groups, string
properties, large quantifiers, lone surrogates, and the parser and VM
corner cases those features exercise.

Reshape the runtime around compile-time pattern hints and a hotter VM
loop. Pre-resolve Unicode properties, derive first-character,
character-class, and simple-scan filters, extract safe trailing
literals for anchored patterns, add literal and literal-alternation
fast paths, and keep reusable scratch storage for registers,
backtracking state, and modifier stacks. Teach `find_all` to stay
inside one VM so global searches stop paying setup costs on every
match.

Make those shortcuts semantics-aware instead of merely fast. In Unicode
mode, do not use literal fast paths for lone surrogates, since
ECMA-262 must not let `/\ud83d/u` match inside a surrogate pair.
Likewise, only derive end-anchor suffix hints when the suffix lies on
every path to `Match`, so lookarounds and disjunctions cannot skip into
a shared tail and produce false negatives.

This commit lands the Rust crate, the C++ wrapper, the build
integration, and the initial LibJS-side plumbing needed to exercise
the new engine under real RegExp callers before removing the legacy
backend.
2026-03-27 17:32:19 +01:00
..
Intl
LibJS+LibUnicode: Add an API to loop over Unicode extensions of one type
2026-03-14 08:17:03 -04:00
JavaScriptImplementations
LibJS: Replace Array.fromAsync with a native JavaScript implementation
2025-11-30 11:54:54 +01:00
Temporal
LibJS: Format "islamic" and "islamic-rgsa" calendars as "islamic-tbla"
2026-03-13 14:43:45 -04:00
AbstractOperations.cpp
LibJS: Remove C++ AST
2026-03-19 21:55:10 -05:00
AbstractOperations.h
LibJS: Remove C++ AST
2026-03-19 21:55:10 -05:00
Accessor.cpp
…
Accessor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Agent.cpp
LibJS: Switch Agent [[CanBlock]] slot to a enum member
2025-04-25 14:07:51 +02:00
Agent.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
AggregateError.cpp
…
AggregateError.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AggregateErrorConstructor.cpp
LibJS: Make internal_define_own_property() save added property offset
2025-09-17 12:44:44 +02:00
AggregateErrorConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AggregateErrorPrototype.cpp
…
AggregateErrorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ArgumentsObject.cpp
LibJS: Mark ArgumentsObject as non-interfering if parameter list empty
2025-12-10 17:40:57 -06:00
ArgumentsObject.h
LibJS: Mark ArgumentsObject as non-interfering if parameter list empty
2025-12-10 17:40:57 -06:00
Array.cpp
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
Array.h
LibJS: Split packed and holey asm indexed fast paths
2026-03-17 22:28:35 -05:00
ArrayBuffer.cpp
LibJS: Cache typed array data pointers for indexed access
2026-03-18 13:59:05 -05:00
ArrayBuffer.h
LibJS: Cache typed array data pointers for indexed access
2026-03-18 13:59:05 -05:00
ArrayBufferConstructor.cpp
LibJS: Make more use of Value::is and Value::as_if
2026-02-28 10:24:37 -05:00
ArrayBufferConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ArrayBufferPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
ArrayBufferPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ArrayConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
ArrayConstructor.h
LibJS: Replace Array.fromAsync with a native JavaScript implementation
2025-11-30 11:54:54 +01:00
ArrayIterator.cpp
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
ArrayIterator.h
LibJS: Avoid IteratorRecord GC-allocation in GetIterator instruction
2025-11-02 20:05:47 +01:00
ArrayIteratorPrototype.cpp
LibJS: Do more comprehensive check if next() fast path is possible
2025-06-02 00:15:36 +02:00
ArrayIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ArrayPrototype.cpp
LibJS: Add Array.prototype fast paths for packed arrays
2026-03-17 22:28:35 -05:00
ArrayPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncDisposableStack.cpp
LibJS: Implement the AsyncDisposableStack interface
2025-01-17 20:46:32 +01:00
AsyncDisposableStack.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncDisposableStackConstructor.cpp
LibJS: Implement the AsyncDisposableStack interface
2025-01-17 20:46:32 +01:00
AsyncDisposableStackConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncDisposableStackPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
AsyncDisposableStackPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncFromSyncIterator.cpp
…
AsyncFromSyncIterator.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncFromSyncIteratorPrototype.cpp
LibJS: Avoid IteratorRecord GC-allocation in GetIterator instruction
2025-11-02 20:05:47 +01:00
AsyncFromSyncIteratorPrototype.h
LibJS: Avoid IteratorRecord GC-allocation in GetIterator instruction
2025-11-02 20:05:47 +01:00
AsyncFunctionConstructor.cpp
LibJS: Replace arguments Span with argument_count in ExecutionContext
2026-03-11 13:33:47 +01:00
AsyncFunctionConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncFunctionDriverWrapper.cpp
LibJS: Synchronous await fast path when microtask queue is empty
2026-03-16 19:15:03 -05:00
AsyncFunctionDriverWrapper.h
LibJS: Synchronous await fast path when microtask queue is empty
2026-03-16 19:15:03 -05:00
AsyncFunctionPrototype.cpp
…
AsyncFunctionPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncGenerator.cpp
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
AsyncGenerator.h
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
AsyncGeneratorFunctionConstructor.cpp
LibJS: Replace arguments Span with argument_count in ExecutionContext
2026-03-11 13:33:47 +01:00
AsyncGeneratorFunctionConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncGeneratorFunctionPrototype.cpp
…
AsyncGeneratorFunctionPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncGeneratorPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
AsyncGeneratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AsyncGeneratorRequest.h
…
AsyncIteratorPrototype.cpp
…
AsyncIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
AtomicsObject.cpp
LibJS: Compute byteIndexInBuffer sooner in Atomic's DoWait
2025-12-03 12:08:40 +01:00
AtomicsObject.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
BigInt.cpp
LibJS: Add a method to stringify a BigInt to UTF-16
2025-08-14 10:27:08 +02:00
BigInt.h
LibJS: Add a method to stringify a BigInt to UTF-16
2025-08-14 10:27:08 +02:00
BigIntConstructor.cpp
LibCrypto: Replace {Unsigned,Signed}BigInteger impl with LibTomMath
2025-05-23 11:57:21 +02:00
BigIntConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
BigIntObject.cpp
…
BigIntObject.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
BigIntPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
BigIntPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
BooleanConstructor.cpp
…
BooleanConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
BooleanObject.cpp
…
BooleanObject.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
BooleanPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
BooleanPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
BoundFunction.cpp
LibJS: Replace arguments Span with argument_count in ExecutionContext
2026-03-11 13:33:47 +01:00
BoundFunction.h
LibJS: Make bytecode generation infallible
2026-02-12 11:37:43 +01:00
ByteLength.h
…
CanonicalIndex.h
…
ClassConstruction.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
ClassConstruction.h
LibJS: Add AST-free construct_class()
2026-02-11 23:57:41 +01:00
ClassFieldDefinition.cpp
LibJS+LibWeb: Add missing GC marking visits
2026-01-07 12:48:58 +01:00
ClassFieldDefinition.h
LibJS+LibWeb: Add missing GC marking visits
2026-01-07 12:48:58 +01:00
CommonPropertyNames.h
LibJS: Implement Iterator.zipKeyed
2026-02-26 13:54:35 -05:00
Completion.cpp
WebContent: Enable in Windows CI
2025-08-23 16:04:36 -06:00
Completion.h
AK: Add SentinelOptional
2026-03-20 12:03:36 +01:00
CompletionCell.cpp
LibJS: Make Completion.[[Value]] non-optional
2025-04-05 11:20:26 +02:00
CompletionCell.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ConsoleObject.cpp
LibJS: Implement console.dirxml
2025-08-17 07:28:56 -04:00
ConsoleObject.h
LibJS: Export symbols causing linker errors in various consumers
2025-08-23 16:04:36 -06:00
ConsoleObjectPrototype.cpp
…
ConsoleObjectPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
DataView.cpp
…
DataView.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
DataViewConstructor.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
DataViewConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
DataViewPrototype.cpp
LibJS: Update spec steps / links for the Float16Array proposal
2025-04-29 07:33:08 -04:00
DataViewPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Date.cpp
LibJS: Handle time zone gaps in JS::utc_time
2026-03-20 14:46:46 +01:00
Date.h
LibJS/Temporal: Implement finding time zone transitions
2026-01-16 07:00:02 -05:00
DateConstructor.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
DateConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
DateParser.h
LibJS: DateParser for simplified ISO8601 and non-standard date strings
2025-05-26 18:48:09 +02:00
DatePrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
DatePrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
DeclarativeEnvironment.cpp
LibJS: Remove unused Badge-gated DeclarativeEnvironment methods
2026-02-11 23:57:41 +01:00
DeclarativeEnvironment.h
LibJS: Remove unused Badge-gated DeclarativeEnvironment methods
2026-02-11 23:57:41 +01:00
DisposableStack.cpp
LibJS: Bring the explicit resource management implementation up to date
2025-01-17 20:46:32 +01:00
DisposableStack.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
DisposableStackConstructor.cpp
LibJS: Bring the explicit resource management implementation up to date
2025-01-17 20:46:32 +01:00
DisposableStackConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
DisposableStackPrototype.cpp
LibJS: Make Completion.[[Value]] non-optional
2025-04-05 11:20:26 +02:00
DisposableStackPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ECMAScriptFunctionObject.cpp
LibJS: Treat concise methods as non-constructors
2026-03-20 15:58:05 -05:00
ECMAScriptFunctionObject.h
LibJS: Treat concise methods as non-constructors
2026-03-20 15:58:05 -05:00
Environment.cpp
LibJS: Limit eval() deoptimization to the containing function scope
2026-01-27 10:58:39 +01:00
Environment.h
LibJS: Limit eval() deoptimization to the containing function scope
2026-01-27 10:58:39 +01:00
EnvironmentCoordinate.h
LibJS: Reduce size of Optional<EnvironmentCoordinate>
2026-03-20 12:03:36 +01:00
Error.cpp
LibJS: Move source range cache from ExecutionContext to Executable
2026-03-11 13:33:47 +01:00
Error.h
LibJS: Move source range cache from ExecutionContext to Executable
2026-03-11 13:33:47 +01:00
ErrorConstructor.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
ErrorConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ErrorPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
ErrorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ErrorTypes.cpp
Revert "LibJS: Revert common error types to only hold a single string"
2025-08-18 13:42:22 +02:00
ErrorTypes.h
LibJS: Implement Iterator.zip
2026-02-26 13:54:35 -05:00
ExecutionContext.cpp
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
ExecutionContext.h
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
FinalizationRegistry.cpp
AK+LibJS: Make SinglyLinkedList::remove() return a new iterator
2025-12-25 20:21:37 +01:00
FinalizationRegistry.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
FinalizationRegistryConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
FinalizationRegistryConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
FinalizationRegistryPrototype.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
FinalizationRegistryPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
FunctionConstructor.cpp
LibJS: Remove C++ compiler pipeline fallback paths
2026-03-19 21:55:10 -05:00
FunctionConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
FunctionEnvironment.cpp
LibJS: Introduce NativeJavaScriptBackedFunction
2025-11-30 11:54:54 +01:00
FunctionEnvironment.h
LibJS: Shrink FunctionEnvironment by reordering members a bit
2025-12-21 12:08:41 -06:00
FunctionKind.h
…
FunctionObject.cpp
LibJS: Convert Object bitfields to a flags byte
2026-03-07 13:09:59 +01:00
FunctionObject.h
LibJS: Convert Object bitfields to a flags byte
2026-03-07 13:09:59 +01:00
FunctionPrototype.cpp
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
FunctionPrototype.h
LibJS: Remove ExecutionContext::function_name field
2025-10-29 21:20:10 +01:00
GeneratorFunctionConstructor.cpp
LibJS: Replace arguments Span with argument_count in ExecutionContext
2026-03-11 13:33:47 +01:00
GeneratorFunctionConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
GeneratorFunctionPrototype.cpp
…
GeneratorFunctionPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
GeneratorObject.cpp
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
GeneratorObject.h
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
GeneratorPrototype.cpp
LibJS: Remove dead C++ bytecode compilation functions
2026-03-19 21:55:10 -05:00
GeneratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
GlobalEnvironment.cpp
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
GlobalEnvironment.h
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
GlobalObject.cpp
LibJS: Reject surrogate code points in URI decoding
2026-02-14 17:29:13 +01:00
GlobalObject.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
IndexedProperties.cpp
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
IndexedProperties.h
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
InterpreterStack.cpp
LibJS: Add InterpreterStack bump allocator for execution contexts
2026-03-04 18:53:12 +01:00
InterpreterStack.h
LibJS: Add InterpreterStack bump allocator for execution contexts
2026-03-04 18:53:12 +01:00
Intrinsics.cpp
LibJS+LibWeb: Port remaining callers to Rust pipeline
2026-03-19 21:55:10 -05:00
Intrinsics.h
LibJS: Lazily instantiate "prototype" field on ECMAScriptFunctionObject
2025-12-17 12:50:17 -06:00
Iterator.cpp
LibJS: Remove remaining C++ pipeline artifacts
2026-03-19 21:55:10 -05:00
Iterator.h
LibJS: Implement Iterator.zip
2026-02-26 13:54:35 -05:00
IteratorConstructor.cpp
LibJS: Replace GC::Weak with GC::RawPtr in inline cache entries
2026-03-08 10:27:13 +01:00
IteratorConstructor.h
LibJS: Implement Iterator.zipKeyed
2026-02-26 13:54:35 -05:00
IteratorHelper.cpp
LibJS: Directly indicate when the IteratorHelper generator is complete
2025-12-03 12:08:40 +01:00
IteratorHelper.h
LibJS: Directly indicate when the IteratorHelper generator is complete
2025-12-03 12:08:40 +01:00
IteratorHelperPrototype.cpp
LibJS: Replace [[UnderlyingIterator]] with [[UnderlyingIterators]]
2025-12-03 12:08:40 +01:00
IteratorHelperPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
IteratorPrototype.cpp
LibJS: Directly indicate when the IteratorHelper generator is complete
2025-12-03 12:08:40 +01:00
IteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
JobCallback.cpp
…
JobCallback.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
JSONObject.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
JSONObject.h
LibJS: Optimize JSON.stringify with single StringBuilder
2026-01-12 13:53:28 -05:00
KeyedCollections.cpp
…
KeyedCollections.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Map.cpp
…
Map.h
LibJS+LibWeb: Add missing GC marking visits
2026-01-07 12:48:58 +01:00
MapConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
MapConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
MapIterator.cpp
LibJS+LibWeb: Add missing GC marking visits
2026-01-07 12:48:58 +01:00
MapIterator.h
LibJS: Mark MapIterator for export
2026-02-17 12:25:27 +00:00
MapIteratorPrototype.cpp
LibJS: Do more comprehensive check if next() fast path is possible
2025-06-02 00:15:36 +02:00
MapIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
MapPrototype.cpp
LibJS: Implement Map.prototype.getOrInsert[Computed]
2025-10-03 08:58:40 +02:00
MapPrototype.h
LibJS: Implement Map.prototype.getOrInsert[Computed]
2025-10-03 08:58:40 +02:00
MathObject.cpp
LibCrypto+AK: Merge LibCrypto/SecureRandom into AK/Random
2026-01-23 15:53:27 +01:00
MathObject.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ModuleEnvironment.cpp
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
ModuleEnvironment.h
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
ModuleNamespaceObject.cpp
LibJS: Add inline caching for adding new own properties to objects
2025-09-17 12:44:44 +02:00
ModuleNamespaceObject.h
LibJS: Fast-path own-property enumeration and reduce descriptor lookups
2025-09-21 15:06:32 +02:00
ModuleRequest.h
LibJS: Remove C++ AST
2026-03-19 21:55:10 -05:00
NativeFunction.cpp
LibJS: Remove vestigial AST.h includes from runtime files
2026-02-11 23:57:41 +01:00
NativeFunction.h
LibJS: Simplify how we know which builtin a FunctionObject represents
2025-12-25 23:59:21 +01:00
NativeJavaScriptBackedFunction.cpp
LibJS: Eliminate GeneratorResult GC cell allocation on yield/await
2026-03-20 15:57:23 -05:00
NativeJavaScriptBackedFunction.h
LibJS: Make bytecode generation infallible
2026-02-12 11:37:43 +01:00
NumberConstructor.cpp
…
NumberConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
NumberObject.cpp
…
NumberObject.h
LibJS: Enable EXPLICIT_SYMBOL_EXPORT and annotate minimum symbol set
2025-07-22 11:51:29 -04:00
NumberPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
NumberPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Object.cpp
LibJS: Promote Holey arrays to Packed when all holes are filled
2026-03-17 22:28:35 -05:00
Object.h
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
ObjectConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
ObjectConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ObjectEnvironment.cpp
LibJS: Make internal_define_own_property() save added property offset
2025-09-17 12:44:44 +02:00
ObjectEnvironment.h
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
ObjectPrototype.cpp
LibJS: Replace GC::Weak with GC::RawPtr in inline cache entries
2026-03-08 10:27:13 +01:00
ObjectPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PrimitiveString.cpp
LibJS: Return UTF16String's ASCII storage when applicable
2026-02-26 00:02:17 +01:00
PrimitiveString.h
LibGC+ClangPlugins: Forbid non-trivial destructors in Cell subclasses
2026-01-30 20:57:42 +01:00
PrivateEnvironment.cpp
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
PrivateEnvironment.h
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
Promise.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
Promise.h
LibJS: Rearrange members to shrink Promise by 8 bytes
2025-12-21 12:08:41 -06:00
PromiseCapability.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
PromiseCapability.h
LibJS: Export symbols causing linker errors in various consumers
2025-08-23 16:04:36 -06:00
PromiseConstructor.cpp
LibJS: Replace arguments Span with argument_count in ExecutionContext
2026-03-11 13:33:47 +01:00
PromiseConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PromiseJobs.cpp
LibJS: Make Completion.[[Value]] non-optional
2025-04-05 11:20:26 +02:00
PromiseJobs.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PromisePrototype.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
PromisePrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PromiseReaction.cpp
…
PromiseReaction.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PromiseResolvingElementFunctions.cpp
LibJS: Make internal_define_own_property() save added property offset
2025-09-17 12:44:44 +02:00
PromiseResolvingElementFunctions.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PromiseResolvingFunction.cpp
…
PromiseResolvingFunction.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
PropertyAttributes.h
LibJS: Make PropertyAttributes and default_attributes constexpr
2026-01-18 10:10:04 +01:00
PropertyDescriptor.cpp
LibGC+LibJS+LibWeb: Add Visitor::visit(Optional<T>)
2026-01-06 10:55:56 +01:00
PropertyDescriptor.h
LibJS+LibWeb: Add missing visits for cached cross-origin properties
2026-01-06 00:01:01 +01:00
PropertyKey.h
AK: Add SentinelOptional
2026-03-20 12:03:36 +01:00
PrototypeObject.h
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
ProxyConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
ProxyConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ProxyObject.cpp
LibJS: Replace arguments Span with argument_count in ExecutionContext
2026-03-11 13:33:47 +01:00
ProxyObject.h
LibJS: Convert Object bitfields to a flags byte
2026-03-07 13:09:59 +01:00
RawJSONObject.cpp
LibJS: Implement rawJSON and isRawJSON functions
2025-04-24 09:33:49 -04:00
RawJSONObject.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Realm.cpp
Revert "LibJS: Shrink ExecutionContext by replacing ScriptOrModule …"
2026-03-11 23:13:18 +00:00
Realm.h
LibJS: Make prototype shape tracking per-Realm instead of global
2026-03-24 08:28:47 +01:00
Reference.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
Reference.h
LibJS: Reduce size of Optional<EnvironmentCoordinate>
2026-03-20 12:03:36 +01:00
ReflectObject.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
ReflectObject.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
RegExpConstructor.cpp
LibJS: Remove C++ lexer, use Rust tokenizer for syntax highlighting
2026-03-19 21:55:10 -05:00
RegExpConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
RegExpLegacyStaticProperties.cpp
LibJS: Use stored input for RegExp legacy static property views
2025-12-03 13:45:26 +01:00
RegExpLegacyStaticProperties.h
AK+LibJS+LibWeb: Recognize that our UTF-16 string is actually WTF-16
2025-08-13 09:56:13 -04:00
RegExpObject.cpp
LibJS: Prevent escaped surrogates from combining in Unicode regexes
2026-02-26 13:50:11 +01:00
RegExpObject.h
LibJS: Export symbols causing linker errors in various consumers
2025-08-23 16:04:36 -06:00
RegExpPrototype.cpp
LibRegex/Rust: Add the ECMA-262 regex engine
2026-03-27 17:32:19 +01:00
RegExpPrototype.h
LibJS: Skip generic call when using regexp builtins in StringPrototype
2025-12-13 13:51:12 -06:00
RegExpStringIterator.cpp
LibJS: Use PrimitiveString more instead of Utf16String in RegExp code
2025-05-03 20:01:20 +02:00
RegExpStringIterator.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
RegExpStringIteratorPrototype.cpp
LibJS+LibWeb: Replace JS::Utf16String with AK::Utf16String
2025-07-18 12:45:38 -04:00
RegExpStringIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Set.cpp
LibJS: Mark JS::Cell::initialize() as MUST_UPCALL
2026-02-06 13:50:54 +01:00
Set.h
LibJS: Add Object::fast_is<Set>() and Object::fast_is<Map>()
2025-09-26 16:21:18 +02:00
SetConstructor.cpp
…
SetConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SetIterator.cpp
LibJS: Make more use of Value::is and Value::as_if
2026-02-28 10:24:37 -05:00
SetIterator.h
LibJS: Avoid IteratorRecord GC-allocation in GetIterator instruction
2025-11-02 20:05:47 +01:00
SetIteratorPrototype.cpp
LibJS: Do more comprehensive check if next() fast path is possible
2025-06-02 00:15:36 +02:00
SetIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SetPrototype.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
SetPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ShadowRealm.cpp
LibJS: Remove C++ compiler pipeline fallback paths
2026-03-19 21:55:10 -05:00
ShadowRealm.h
LibJS: Skip initializing constant slots in ExecutionContext
2026-01-19 10:48:12 +01:00
ShadowRealmConstructor.cpp
…
ShadowRealmConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
ShadowRealmPrototype.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
ShadowRealmPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Shape.cpp
LibJS: Make prototype shape tracking per-Realm instead of global
2026-03-24 08:28:47 +01:00
Shape.h
LibJS: Replace GC::Weak with GC::RawPtr in inline cache entries
2026-03-08 10:27:13 +01:00
SharedArrayBufferConstructor.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
SharedArrayBufferConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SharedArrayBufferPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
SharedArrayBufferPrototype.h
LibJS: Crudely implement growable SharedArrayBuffers
2026-01-04 07:47:55 +01:00
SharedFunctionInstanceData.cpp
LibJS: Remove C++ AST constructor from SharedFunctionInstanceData
2026-03-19 21:55:10 -05:00
SharedFunctionInstanceData.h
LibJS: Remove C++ AST constructor from SharedFunctionInstanceData
2026-03-19 21:55:10 -05:00
StringConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
StringConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
StringIterator.cpp
LibJS: Make more use of Value::is and Value::as_if
2026-02-28 10:24:37 -05:00
StringIterator.h
LibJS: Avoid IteratorRecord GC-allocation in GetIterator instruction
2025-11-02 20:05:47 +01:00
StringIteratorPrototype.cpp
LibJS: Do more comprehensive check if next() fast path is possible
2025-06-02 00:15:36 +02:00
StringIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
StringObject.cpp
LibJS: Replace IndexedProperties with inline Packed/Holey/Dictionary
2026-03-17 22:28:35 -05:00
StringObject.h
LibJS: Fast-path own-property enumeration and reduce descriptor lookups
2025-09-21 15:06:32 +02:00
StringPrototype.cpp
LibJS: Replace GC::Weak with GC::RawPtr in inline cache entries
2026-03-08 10:27:13 +01:00
StringPrototype.h
LibJS: Explicitly prevent out-of-bounds access in String.lastIndexOf
2025-10-03 09:03:40 +02:00
SuppressedError.cpp
…
SuppressedError.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SuppressedErrorConstructor.cpp
LibJS: Make internal_define_own_property() save added property offset
2025-09-17 12:44:44 +02:00
SuppressedErrorConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SuppressedErrorPrototype.cpp
…
SuppressedErrorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Symbol.cpp
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
Symbol.h
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
SymbolConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
SymbolConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SymbolObject.cpp
…
SymbolObject.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
SymbolPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
SymbolPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
TypedArray.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
TypedArray.h
LibJS: Cache typed array data pointers for indexed access
2026-03-18 13:59:05 -05:00
TypedArrayConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
TypedArrayConstructor.h
LibJS+LibWeb+WebContent: Port JS::PropertyKey to UTF-16
2025-08-05 07:07:15 -04:00
TypedArrayPrototype.cpp
LibJS: Make more use of Value::is and Value::as_if in JS runtime
2026-02-27 17:19:33 +01:00
TypedArrayPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
Uint8Array.cpp
LibJS: Use non-copying GetUint8ArrayBytes() in Uint8Array.toBase64()
2025-11-29 09:39:43 -05:00
Uint8Array.h
LibJS: Use non-copying GetUint8ArrayBytes() in Uint8Array.toBase64()
2025-11-29 09:39:43 -05:00
Utf16String.h
AK: Add SentinelOptional
2026-03-20 12:03:36 +01:00
Value.cpp
LibJS: Replace GC::Weak with GC::RawPtr in inline cache entries
2026-03-08 10:27:13 +01:00
Value.h
AK: Add SentinelOptional
2026-03-20 12:03:36 +01:00
ValueInlines.h
LibJS: Sprinkle [[likely]] on the fast paths in ValueInlines.h
2025-10-11 20:08:58 +02:00
ValueTraits.h
Meta: Enforce newlines around namespaces
2025-05-14 02:01:59 -06:00
VM.cpp
LibJS: Synchronous await fast path when microtask queue is empty
2026-03-16 19:15:03 -05:00
VM.h
LibJS: Synchronous await fast path when microtask queue is empty
2026-03-16 19:15:03 -05:00
WeakMap.cpp
…
WeakMap.h
LibJS+LibWeb: Add various fast_is<T>() helpers for common things
2025-12-20 09:13:19 -06:00
WeakMapConstructor.cpp
LibJS: Make more use of Value::is and Value::as_if
2026-02-28 10:24:37 -05:00
WeakMapConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WeakMapPrototype.cpp
LibJS: Implement WeakMap.prototype.getOrInsert[Computed]
2025-10-03 08:58:40 +02:00
WeakMapPrototype.h
LibJS: Implement WeakMap.prototype.getOrInsert[Computed]
2025-10-03 08:58:40 +02:00
WeakRef.cpp
LibJS: Remove bogus VERIFY_NOT_REACHED() in WeakRef::remove_dead_cells()
2026-01-07 07:52:03 -05:00
WeakRef.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WeakRefConstructor.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
WeakRefConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WeakRefPrototype.cpp
…
WeakRefPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WeakSet.cpp
…
WeakSet.h
LibJS: Export symbols causing linker errors in various consumers
2025-08-23 16:04:36 -06:00
WeakSetConstructor.cpp
…
WeakSetConstructor.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WeakSetPrototype.cpp
LibJS: Pass JS::Value directly to string formatting functions
2025-12-09 21:44:13 -06:00
WeakSetPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WrapForValidIteratorPrototype.cpp
…
WrapForValidIteratorPrototype.h
LibJS: Revert Enable EXPLICIT_SYMBOL_EXPORT
2025-07-22 11:51:29 -04:00
WrappedFunction.cpp
Revert "LibJS: Shrink ExecutionContext by replacing ScriptOrModule …"
2026-03-11 23:13:18 +00:00
WrappedFunction.h
LibJS: Make bytecode generation infallible
2026-02-12 11:37:43 +01:00