margelo/nitro

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🔥 Insanely fast native C++, Swift or Kotlin modules with a statically compiled binding layer to JSI

Stars: 1.9k
Forks: 117
Open beginner issues: 0
Indexed issues: 47
Avg merge: 1d 8h
Merged PRs (30d): 44

Dominant language: C++
License: MIT
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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47 open issues indexed

iOS: dyld "Symbol not found: std::exception_ptr::__from_native_exception_pointer" on iOS < 18 when built with Xcode 27 Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

margelo/nitro#1652 · 1 comment · 3 reactions · Opened Sep 17, 2026
SIGSEGV from JSI in Frame Processor/Worklet during unmount or reload Open

nitro-core

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

margelo/nitro#1645 · 6 comments · Opened Sep 8, 2026
package.json is bundled into applications Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

margelo/nitro#1619 · Opened Sep 7, 2026
iOS build fails since 0.37.0 without `use_frameworks!` on RN <= 0.83: import of module 'glog.glog.log_severity' appears within namespace 'google' — could not build module 'NitroModules' Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

margelo/nitro#1573 · 1 reaction · Opened Aug 31, 2026
Generated Android guidance references nonexistent registerNatives() Open

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

margelo/nitro#1565 · Opened Aug 30, 2026
Native record conversion loses __proto__ keys Open

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

margelo/nitro#1563 · 1 comment · Opened Aug 30, 2026
Release HybridFunction calls dereference invalid NativeState Open

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

margelo/nitro#1561 · Opened Aug 30, 2026
Settled C++ Promises retain impossible listeners Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

margelo/nitro#1559 · Opened Aug 30, 2026
Nitrogen exits successfully when no specs are generated Open

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

margelo/nitro#1555 · Opened Aug 30, 2026
Nitrogen ignores the --config option Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

margelo/nitro#1554 · Opened Aug 30, 2026
Promise settlement is only guarded in debug builds Open

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

margelo/nitro#1553 · Opened Aug 30, 2026
Zero-worker ThreadPool never starts queued work Open

Difficulty 3/5 1-2 days Newbie friendliness 70/100

margelo/nitro#1551 · Opened Aug 30, 2026
Worklets integration initialization errors are silently swallowed Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

margelo/nitro#1549 · Opened Aug 30, 2026
createNativeArrayBuffer accepts invalid allocation sizes Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

margelo/nitro#1545 · Opened Aug 30, 2026
HybridObject instanceof throws for null and primitive values Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

margelo/nitro#1543 · Opened Aug 30, 2026
Allow never in discriminated union members instead of throwing a spec-generation error Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 55/100

margelo/nitro#1482 · Opened Aug 15, 2026
Errors thrown in JS callbacks are not catchable from Swift Open

nitrogen swift

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

margelo/nitro#1481 · 1 comment · Opened Aug 13, 2026
Add Discriminating Types Open

enhancement

margelo/nitro#1466 · 1 assignee · Opened Aug 4, 2026
Invoking JS function from native code twice Open

nitro-core

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

margelo/nitro#1439 · 3 comments · Opened Jul 15, 2026
HybridView props are not re-applied when Fabric recreates the native view Open

nitrogen

Difficulty 4/5 3-5 days Newbie friendliness 55/100

margelo/nitro#1380 · 1 comment · Opened Jun 4, 2026
Generated struct operator== breaks std::vector<std::string>.map (CxxRandomAccessCollection) when the module also links a heavy C++ library Open

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

margelo/nitro#1376 · 1 comment · 1 reaction · Opened Jun 1, 2026
Optional<Struct> reads garbage enum tag bytes on iOS Release via Swift Cxx-interop bridge Open

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

margelo/nitro#1319 · 3 comments · Opened May 8, 2026
dispose() on HybridObject prop crashes Fabric scheduler in DEV mode Open

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

margelo/nitro#1296 · 2 reactions · Opened Apr 22, 2026
Nitrogen iOS bridge headers use quoted includes for shared C++ types — collides when two Nitro modules share a header filename Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

margelo/nitro#1293 · 7 comments · Opened Apr 18, 2026
HybridObjects with the same name are not included correctly in C++ Open

c++ nitrogen

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

margelo/nitro#1278 · Opened Mar 28, 2026
Deep import of react-native/Libraries/NativeComponent/NativeComponentRegistry breaks expo web builds with tree shaking Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

margelo/nitro#1216 · 2 comments · 1 reaction · Opened Feb 12, 2026
[Feature] Support `measureContent(...)` for Nitro Views Open

enhancement

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

margelo/nitro#1199 · 9 reactions · Opened Feb 3, 2026
vector has no member "map" Open

build/setup nitrogen swift

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

margelo/nitro#1186 · 19 comments · 1 reaction · Opened Jan 24, 2026
Error when assigning `undefined` to optional view property Open

nitro-core

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

margelo/nitro#1184 · 10 comments · 1 reaction · Opened Jan 24, 2026
[FEATURE REQUEST] Initialize optional properties with `null` by default Open

enhancement kotlin nitrogen

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

margelo/nitro#1174 · 10 comments · Opened Jan 17, 2026
Extending from an external `HybridObject` does not compile in Swift Open

nitrogen swift

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

margelo/nitro#1158 · 2 comments · Opened Jan 15, 2026
dispose() fails on HybridObject when used as HybridView prop: failed to define internal native state property Open

nitro-core

Difficulty 4/5 3-5 days Newbie friendliness 38/100

margelo/nitro#1083 · 1 reaction · Opened Dec 8, 2025
maximum call stack error after upgrade 0.31.10 Open

nitrogen

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

margelo/nitro#1079 · 3 comments · Opened Dec 5, 2025
Nitrogen crashes with self-referential struct types (Maximum call stack size exceeded) Open

nitrogen

Difficulty 3/5 1-2 days Newbie friendliness 48/100

margelo/nitro#1070 · 4 comments · Opened Dec 1, 2025
iOS SPM Support Open

enhancement swift

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

margelo/nitro#1045 · 2 comments · 1 reaction · Opened Nov 12, 2025
HybridObject shows as JSObject(__type) in Hermes memory dumps Open

enhancement nitro-core

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

margelo/nitro#1016 · 1 comment · Opened Nov 1, 2025
[Feature] Allow using C++ HybridObjects from Swift/Kotlin Open

enhancement

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

margelo/nitro#1006 · 2 comments · Opened Oct 29, 2025
Complex callback causes iOS to not build Open

nitro-core swift

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

margelo/nitro#975 · 5 comments · Opened Oct 21, 2025
Optional variant/union fields don't use TypeScript type name in generated Swift enums Open

nitrogen

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

margelo/nitro#921 · Opened Oct 8, 2025
Remove redundant Nitro logs for better UX Open

nitro-core

Difficulty 3/5 1-2 days Newbie friendliness 38/100

margelo/nitro#883 · 2 comments · 2 reactions · Opened Sep 17, 2025
[Feature] Support children in Nitro Views Open

enhancement

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

margelo/nitro#873 · 9 comments · Opened Sep 15, 2025
[Feature Request] Swift 6 Concurrency Support (`actor`, `@Sendable`, ...) Open

enhancement swift

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

margelo/nitro#719 · 3 comments · 1 reaction · Opened Jul 8, 2025
Bug: C++ types from imported module '__ObjC' do not support library evolution Open

build/setup

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

margelo/nitro#696 · 25 comments · 2 reactions · Opened Jun 13, 2025
Documentation Request: Testing Example Open

documentation enhancement

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

margelo/nitro#629 · 2 comments · 2 reactions · Opened Apr 7, 2025
[Feature] Support for Rust language in nitrogen Open

enhancement nitrogen

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

margelo/nitro#258 · 8 comments · 7 reactions · Opened Oct 25, 2024
[Feature] Support for Windows (react-native-windows) Open

enhancement

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

margelo/nitro#168 · 13 comments · 8 reactions · Opened Oct 3, 2024
Tuple (`[A, B, C]`) doesn't work in Swift Open

enhancement swift

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

margelo/nitro#38 · 5 reactions · Opened Aug 14, 2024

margelo/nitro

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