chakra-core/ChakraCore

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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

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582 open issues indexed

ch.exe doesn't support module load cross-thread Open

Test Bug

chakra-core/ChakraCore#3318 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ch.exe's global states (e.g. sourceContext, module*Map) need to change to work cross-thread Open

Test Bug

chakra-core/ChakraCore#3319 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
about JsDiagGetFunctionPosition. This maybe a bug. Open

Bug Severity: 3

chakra-core/ChakraCore#3325 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WScript.LoadModule inconsistencies Open

Test Bug

chakra-core/ChakraCore#3356 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Lexical declarations should be shared when global object is non-extensible Open

Bug Severity: 2

chakra-core/ChakraCore#3372 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Lexical declaration of `undefined` in global scope should result in SyntaxError Open

Bug Severity: 3

chakra-core/ChakraCore#3373 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Function declarations should not shadow non-enumerable non-configurable properties of the global object Open

Bug Severity: 3

chakra-core/ChakraCore#3374 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Arguments object properties should throw an error when non-configurable Open

Bug Severity: 3

chakra-core/ChakraCore#3394 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Declarations (other than var) within the same block should throw in all modes Open

Bug Severity: 3

chakra-core/ChakraCore#3395 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Enumeration order of class properties is incorrect Open

Bug Severity: 2

chakra-core/ChakraCore#3396 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Global declarations created inside eval should not change configurability of existing properties Open

Bug Severity: 2

chakra-core/ChakraCore#3404 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Direct eval variable declaration with same name as outer lexical binding should be early syntax error Open

Bug Severity: 3

chakra-core/ChakraCore#3405 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Chakra doesn't seem to inline very well compared to other JS jit implementations. Open

Performance

chakra-core/ChakraCore#3442 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Implement RegExp lookbehind assertions Open

Task

chakra-core/ChakraCore#3448 · 2 comments · 7 reactions · 0 assignees · Indexed Sep 14, 2026
Fix the dynamic attach scenario for generators Open

Bug Dev Experience Severity: 2 Task

chakra-core/ChakraCore#3453 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
xplat: ChakraCore doesn't update process tzdata if system timezone changes Open

Feature Request

chakra-core/ChakraCore#3467 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Bulk memory operations (2w) Open

WebAssembly

chakra-core/ChakraCore#3476 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Threads (1m) Open

WebAssembly

chakra-core/ChakraCore#3477 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Multi-Value (2w) Open

WebAssembly

chakra-core/ChakraCore#3478 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Managed Data/GC (2m) Open

WebAssembly

chakra-core/ChakraCore#3481 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Exception-Handling (1m) Open

WebAssembly

chakra-core/ChakraCore#3483 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
WASM - Tail Call (3w) Open

WebAssembly

chakra-core/ChakraCore#3484 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Make official ChakraCore Linux binaries that work on all currently maintained versions of Linux Open

Feature Request

chakra-core/ChakraCore#3494 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Incorrect iteration order of deleted and re-assigned properties. Open

Bug Compatibility ECMAScript Spec Severity: 2

chakra-core/ChakraCore#3505 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
[macOS | Building] error with 'cstdint' file not found while build for macOS 10.7 Open

Out of Scope

chakra-core/ChakraCore#3519 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Realization of TypedArray's [[DefineOwnProperty]] is inconsistent with other engines Open

Bug Severity: 2

chakra-core/ChakraCore#3532 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Errors running native-tests on linux when built with sanitize Open

Codebase Quality Test Bug

chakra-core/ChakraCore#3543 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
xplat issues with detection and use of SSE instructions for SSE versions greater than SSE2 Open

Discussion

chakra-core/ChakraCore#3551 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
CMake target processor error in MSVC 2017 Open

Build Bug

chakra-core/ChakraCore#3558 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add API to store private properties in any object Open

Feature Request

chakra-core/ChakraCore#3592 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Use of formals defined to the right should throw use before declaration error Open

Bug Severity: 3

chakra-core/ChakraCore#3600 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Date shift on daylight saving in Brasilia UTC-3 with date.toString() Open

Bug External Intl Severity: 3

chakra-core/ChakraCore#3627 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Object constructor calls are slow Open

Performance

chakra-core/ChakraCore#3629 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Debugger API documentation Open

Discussion Wiki

chakra-core/ChakraCore#3636 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Debug Javascript using visual studio. Open

Dev Experience Feature Request

chakra-core/ChakraCore#3637 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Designating a module as library code Open

Feature Request

chakra-core/ChakraCore#3640 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[Meta-issue] Intl operations returning incompatible results on Windows: investigate whether causes are strictly External Open

Compatibility Intl-ICU Task Windows

chakra-core/ChakraCore#3644 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ASAN: Output::buffer isn't properly freed Open

Bug Severity: 3

chakra-core/ChakraCore#3651 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
(2h,P3) Intl-ICU: Integrate with Node-ChakraCore build system to expose Intl-ICU on Windows Open

Intl-ICU Task Windows

chakra-core/ChakraCore#3677 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Debugger doesn't catch error thrown inside for...of loop immediately Open

Bug Severity: 3

chakra-core/ChakraCore#3685 · 9 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Request: SyntaxError message for Merge conflict marker (as detected by TypeScript) Open

Dev Experience Feature Request

chakra-core/ChakraCore#3698 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Scoping seems screwy for JsDiagEvaluate() Open

Bug Severity: 3

chakra-core/ChakraCore#3708 · 6 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Intl: Implement Intl.js version of Array.prototype.toLocaleString (if different) Open

Intl Task

chakra-core/ChakraCore#3709 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Intl (ECMA 402 Draft) Implement Intl.js version of String.prototype.toLocaleLowerCase Open

ES Spec Changed Intl Task

chakra-core/ChakraCore#3710 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Intl (ECMA 402 Draft) Implement Intl.js version of String.prototype.toLocaleUpperCase Open

ES Spec Changed Intl Task

chakra-core/ChakraCore#3711 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
AutoDisableInterrupt is a confusing name Open

Codebase Quality Task

chakra-core/ChakraCore#3735 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Large fragmentation by using JSON.stringify, window.postMessage. Open

Bug Severity: 2

chakra-core/ChakraCore#3752 · 15 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Remove asm.js templatized jit from release builds Open

help wanted Task

chakra-core/ChakraCore#3757 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Date object is slow Open

Node Performance

chakra-core/ChakraCore#3760 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Determine how to compile ICU data alongside ChakraCore Open

Intl-ICU Task

chakra-core/ChakraCore#3800 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026

chakra-core/ChakraCore

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