servo/mozjs

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Servo's SpiderMonkey fork

Stars: 359
Forks: 152
Open beginner issues: 0
Indexed issues: 44
Avg merge: 2d 10h
Merged PRs (30d): 8

Dominant language: Rust
License: No license data
Last GitHub push: Sep 13, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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44 open issues indexed

docs.rs build for mozjs is broken Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

servo/mozjs#808 · 2 comments · Opened Aug 30, 2026
windows `jsapi.cpp: warning C4117: macro name '_CRT_USE_BUILTIN_OFFSETOF' is reserved, '#define' ignored` Open

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

servo/mozjs#790 · 2 comments · Opened Aug 11, 2026
rootedguard drop panic Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

servo/mozjs#787 · 3 comments · Opened Aug 1, 2026
jsapi.cpp changes do not trigger rebuilds Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#783 · Opened Jul 18, 2026
Pass `&mut JSContext` to hooks Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

servo/mozjs#772 · 1 comment · Opened Jul 4, 2026
Add bytecode cache Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

servo/mozjs#763 · Opened Jun 22, 2026
jsglue: Investigate no trivial copy-assignment warning in JS_StackCapture Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

servo/mozjs#755 · Opened Jun 11, 2026
Expose js::DumpHeap and similar APIs for debugging GC Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

servo/mozjs#750 · Opened Jun 1, 2026
Ask mozilla to make SM stuff on release Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

servo/mozjs#747 · 6 comments · Opened May 19, 2026
Remove workaround for buggy make version once cargo fifo jobserver is there Open

blocked by external

Difficulty 4/5 3-5 days Newbie friendliness 45/100

servo/mozjs#742 · Opened Apr 22, 2026
Build is broken with crown analysis enabled Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

servo/mozjs#737 · 2 comments · Opened Apr 21, 2026
Windows sccache 0% for debugmozjs Open

windows

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#721 · 1 comment · Opened Mar 17, 2026
AutoRealm is bad Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#709 · 5 comments · Opened Feb 20, 2026
CI: Reverting the version (to a lower number) should fail the version bump check Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

servo/mozjs#672 · Opened Nov 25, 2025
macos 26: Compiling now reqiures `xcrun cargo build` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#668 · 1 comment · Opened Nov 19, 2025
Upload split debug-info Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

servo/mozjs#665 · 2 reactions · Opened Nov 18, 2025
build.rs: Respect CXXSTDLIB Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

servo/mozjs#662 · Opened Nov 18, 2025
Proving soundness Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

servo/mozjs#654 · 6 comments · 1 reaction · Opened Nov 11, 2025
[meta] Safety from ground up Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

servo/mozjs#647 · 2 comments · Opened Nov 7, 2025
Meta: bindgen issues Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

servo/mozjs#643 · 3 comments · Opened Nov 6, 2025
Road to safe wrappers Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

servo/mozjs#641 · Opened Nov 3, 2025
Support custom allocator Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#635 · Opened Oct 30, 2025
Building mozjs from source in servo build for android fails Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

servo/mozjs#634 · 3 comments · 1 reaction · Opened Oct 28, 2025
Can't set parallelism? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

servo/mozjs#622 · 2 comments · Opened Sep 26, 2025
Upgrade to icu4x 2.0 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#588 · Opened Jul 2, 2025
Merge glue module to jsapi Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

servo/mozjs#585 · 5 comments · Opened May 22, 2025
GC related safety and soundness issues Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

servo/mozjs#569 · 16 comments · 2 reactions · Opened Mar 23, 2025
Traceable is unsound Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#560 · 11 comments · Opened Mar 5, 2025
Documentation for Heap::handle is unclear Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

servo/mozjs#536 · 2 comments · Opened Dec 14, 2024
CapturedJSStack::as_string should pass a principal argument Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

servo/mozjs#534 · Opened Dec 14, 2024
Blocklist `mozilla::atomic` or make bindings opaque Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#532 · Opened Dec 10, 2024
Maybe unsound in CustomAutoRooterGuard::new Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#531 · 2 comments · Opened Dec 10, 2024
Improve debugging experience when debugging host != build machine Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

servo/mozjs#485 · 3 comments · Opened Jul 29, 2024
Enable #[deny(improper_ctypes)] Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#466 · 4 comments · Opened Jun 14, 2024
Use of `Pin` for `Heap<T>` to indicate Immovability Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

servo/mozjs#376 · 6 comments · 2 reactions · Opened Aug 25, 2023
Add safe GC rooting infrastructure Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

servo/mozjs#346 · 6 comments · Opened Feb 19, 2023
`type_traits` not found when building on Linux Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

servo/mozjs#338 · 1 comment · 1 reaction · Opened Jan 17, 2023
Patch error message for newer macOS SDK to point at relevant docs Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

servo/mozjs#289 · 1 comment · Opened Nov 10, 2021
Spurious rebuilds (still…) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

servo/mozjs#249 · 7 comments · Opened Apr 24, 2020
Use clang-cl instead of cl to build jsglue.cpp Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

servo/mozjs#231 · 1 comment · Opened Feb 24, 2020
Many bindings are probably very much broken Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

servo/mozjs#229 · 1 comment · Opened Jan 15, 2020
Consider using a whitelist of items rather thank blacklisting the ones we don't want Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

servo/mozjs#228 · 1 comment · Opened Jan 15, 2020
mozjs should be able to build with system-installed MSYS2 on Windows Open

windows

Difficulty 5/5 Over a week Newbie friendliness 25/100

servo/mozjs#194 · Opened Aug 5, 2019
debugmozjs build is not supported on Windows Open

blocked by external windows

Difficulty 4/5 3-5 days Newbie friendliness 35/100

servo/mozjs#189 · 5 comments · Opened Jun 30, 2019

servo/mozjs

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