chakra-core/ChakraCore

View on GitHub

ChakraCore is an open source Javascript engine with a C API.

Stars: 9.3k
Forks: 1.2k
Open beginner issues: 0
Indexed issues: 582

Dominant language: JavaScript
License: MIT
Last GitHub push: Feb 19, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted good first issue
PR merge metrics: No merged PRs in 30d

Open All

582 open issues indexed

[RegExp] Unicode-mode RegExp incorrectly matches lone surrogates Open

Bug help wanted Severity: 2

chakra-core/ChakraCore#98 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Make number serialization compatible with V8 (and new IETF spec draft) Open

Bug Compatibility help wanted Severity: 2 Suggestion

chakra-core/ChakraCore#149 · 20 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Not hoisting fixed field checks out of loop (at least in some cases) Open

help wanted Performance Suggestion

chakra-core/ChakraCore#222 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[RegExp] Can't make "lastIndex" property of a RegExp instance non-writable Open

Bug Severity: 3

chakra-core/ChakraCore#238 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Missing FPU state save/restore Open

Task

chakra-core/ChakraCore#260 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Add project that produces a static library version of ChakraCore Open

Discussion help wanted Suggestion

chakra-core/ChakraCore#279 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[linux] Enable STACK_BACK_TRACE on linux Open

help wanted Linux

chakra-core/ChakraCore#342 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[linux] Re-enable static valid pointer maps Open

help wanted Linux

chakra-core/ChakraCore#343 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Hoisting a var declaration past a lexical declaration of the same name should be a SyntaxError Open

Bug help wanted Severity: 2

chakra-core/ChakraCore#357 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Remove "args.Info.Count == 0" checks Open

Codebase Quality Task

chakra-core/ChakraCore#387 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
JSRT: JsDeleteIndexedProperty does not tell successful or not Open

APIs Bug good first issue help wanted Severity: 3

chakra-core/ChakraCore#504 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[RegExp] Exceptions for RegExp in Annex B of the ES2017 spec shouldn't be applied when the "unicode" flag is present Open

Bug help wanted Severity: 2

chakra-core/ChakraCore#518 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
JavascriptArray bugs in numeric propertyId handling Open

Bug Severity: 2

chakra-core/ChakraCore#526 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
function.name not used in stack trace Open

Dev Experience Task

chakra-core/ChakraCore#564 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Abstract iterable loop in built-in constructors to reduce down to one implementation that contains special case optimization for arrays Open

Suggestion

chakra-core/ChakraCore#571 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Support Error.prepareStackTrace and Error.captureStackTrace Open

Bug Severity: 2

chakra-core/ChakraCore#587 · 6 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
JSRT APIs JsConvertValueToString and JsGetProperty fail if the input value is taggedInt instead of Object Open

Bug Severity: 3

chakra-core/ChakraCore#660 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Periodically run other RL variants, e.g. forceserialize and forceundodefer. Open

Suggestion Task Test Bug

chakra-core/ChakraCore#670 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Lowerer UseWithNewType() and Legalize() counter-intuitive behavior Open

Codebase Quality Suggestion

chakra-core/ChakraCore#727 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`let` vs `var` generates a lot more instructions Open

Discussion Performance

chakra-core/ChakraCore#800 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
No syntax error for let redeclaring var in a block Open

Bug help wanted Severity: 3

chakra-core/ChakraCore#849 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
make pageAllocator able to commit part of requested pages Open

Suggestion

chakra-core/ChakraCore#879 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Assert less-than-pointer allocation to be leaf Open

Codebase Quality Task

chakra-core/ChakraCore#880 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Own "arguments" and "caller" properties of non-strict functions don't observe the invariability of nonconfigurable, nonwritable properties Open

Bug Severity: 2

chakra-core/ChakraCore#1048 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
String accesses and comparisons using indexes not optimized in Chakra Open

Performance Severity: 2

chakra-core/ChakraCore#1222 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
SAL annotation for some JsRT APIs should be changed. Open

Suggestion Task

chakra-core/ChakraCore#1225 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Optimize OP_LdCustomSpreadIteratorList for arguments object Open

good first issue help wanted Performance Proposal Suggestion

chakra-core/ChakraCore#1230 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Feature Request: Enable ChakraCore embedding using CMake. Open

help wanted Linux OSX Suggestion

chakra-core/ChakraCore#1616 · 22 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Adding small REPL for development purpose Open

good first issue help wanted Suggestion

chakra-core/ChakraCore#1619 · 19 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
StackTraceArguments are set to be from a global context too often in some cases Open

Bug Severity: 3

chakra-core/ChakraCore#1645 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Evaluate type transitions for adding properties on SimpleDictionaryTypeHandler Open

Performance

chakra-core/ChakraCore#1714 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
RegExp: String replace operations using Regular Expressions are slow in EDGE and IE9+ for large strings Open

Performance Severity: 3

chakra-core/ChakraCore#1733 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
LHS should be evaluated first in the assignment. Open

Bug Compatibility Severity: 3

chakra-core/ChakraCore#1745 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
TTD - Script file location for VSCode during debugging Open

Task

chakra-core/ChakraCore#1766 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Fold const math operations (5d) Open

Performance WebAssembly

chakra-core/ChakraCore#1889 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
JSRT: Inconsistent Callback behavior Open

APIs Discussion

chakra-core/ChakraCore#1917 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Use /Zc:strictStrings flag in VC builds. Open

Codebase Quality Continuous Integration good first issue help wanted Suggestion

chakra-core/ChakraCore#1942 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Clean up TypedArray tests (test/typedarray/*.js) Open

Codebase Quality Severity: 3 Task

chakra-core/ChakraCore#2020 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
linux: Fix compile using GCC Open

Linux OSX Task

chakra-core/ChakraCore#2038 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Fix fgPeepTmp annotation and re-enable related BailOnNoProfile Optimization Open

Performance

chakra-core/ChakraCore#2062 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spilling caller save register on helper call that always throws (3d) Open

Performance WebAssembly

chakra-core/ChakraCore#2075 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Create native arrays for bare Array() calls Open

Performance

chakra-core/ChakraCore#2082 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - exported function properties (4d) Open

WebAssembly

chakra-core/ChakraCore#2101 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add tests (here or in Chakra-Samples) to ensure ChakraCore Samples don't break. Open

Codebase Quality Proposal

chakra-core/ChakraCore#2160 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Simplify C/C++ Module Creation Open

Proposal

chakra-core/ChakraCore#2186 · 4 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Add ETW for diagnosing parse time of scripts Open

Performance

chakra-core/ChakraCore#2312 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
TypedArray length incorrectly reported in JITed code Open

Bug Severity: 2

chakra-core/ChakraCore#2319 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
TTD - Improve scanning of well known persistent pointers Open

Task

chakra-core/ChakraCore#2321 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Lift template escape sequence restrictions in tagged templates Open

ECMAScript Spec Proposal Task

chakra-core/ChakraCore#2344 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Update CaseInsensitive table to Unicode 9.0 Open

Task

chakra-core/ChakraCore#2367 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026

chakra-core/ChakraCore

Get new issues in your inbox