Release 0.32.0

0.32.0 (2025-12-23)

Nitro 0.32 is a big release:

• new DX/convenience features (such as making all C++/Swift structs Equatable/operator==, or making Kotlin structs/enums extensible via companion object)
• huge performance improvements by caching jsi::PropNameID (measured ~30% faster performance with structs)

❗️Breaking Changes

• Generated Swift structs' individual properties should be read-only. Their setters have been removed to make this more obvious. (#1086) (78e17ba)

✨ Features

• Add companion object to Kotlin enums/structs (#1084) (8cfcae6)
• Make all C++ (and Swift) structs implement operator== (Equatable) (#1019) (ac0aee6)
• Use OSLog instead of NSLog (#1100) (24d60bc)

💨 Performance Improvements

• Cache jsi::PropNameIDs (makes Nitro 30% faster) (#1114) (c942637)
• Cache calls to common JS functions (like Promise, Date, ...) (#1112) (50322d9)
• Add bulk converter for AnyMap.toHashMap() for Kotlin (~50% faster) (#1109) (4c7eb73)
• Add bulk converter for AnyMap.fromMap(...) for Kotlin (~29% faster) (#1118) (5e5312a)
• Inline static JNI enum fields (#1123) (9565faa)

🐛 Bug Fixes

• Fix Record<string, number> generating wrong code in Kotlin/fbjni (#1061) (85a5a0b)
• Fix Android import path for ReactNativeVersion.h (#1108) (502fd6e)
• Fix missing JUnit import for Promise<void> on Kotlin (#1105) (19646da)
• Implement ThreadUtils in pure C++ on iOS (#1101) (b8ca08f)
• Make structs final to prevent accidental subclassing (#1085) (1c11b25)
• Prioritize pthread over of GCD APIs for getThreadName() (a9d5fad)
• Remove postinstall hook from individual packages (#1088) (e7eae48)
• Remove Swift struct setters, as they should be immutable (#1086) (78e17ba)

📚 Documentation

• Update comparison (500e26a)
• Update enum docs (e79c057)
• Add min NDK version r27 to minimum requirements (#1089) (a08a827)
• Fix it's -> its (#1125) (2eb56b1)

Release 0.32.0-beta.0

0.32.0-beta.0 (2025-12-18)

Nitro 0.32 is a big release:

• new DX/convenience features (such as making all C++/Swift structs Equatable/operator==, or making Kotlin structs/enums extensible via companion object)
• huge performance improvements by caching jsi::PropNameID (measured ~30% faster performance with structs)

❗️Breaking Changes

• Generated Swift structs' individual properties should be read-only. Their setters have been removed to make this more obvious.

✨ Features

• Add companion object to Kotlin enums/structs (#1084) (8cfcae6)
• Make all C++ (and Swift) structs implement operator== (Equatable) (#1019) (ac0aee6)
• Use OSLog instead of NSLog (#1100) (24d60bc)

💨 Performance Improvements

• Add bulk HashMap conversion method to AnyMap to make conversion faster (#1109) (4c7eb73)
• Cache jsi::PropNameIDs (makes Nitro 30% faster) (#1114) (c942637)
• Cache calls to common JS functions (like Promise, Date, ...) (#1112) (50322d9)

🐛 Bug Fixes

• Fix Record<string, number> generating wrong code in Kotlin/fbjni (#1061) (85a5a0b)
• Fix Android import path for ReactNativeVersion.h (#1108) (502fd6e)
• Fix missing JUnit import for Promise<void> on Kotlin (#1105) (19646da)
• Implement ThreadUtils in pure C++ on iOS (#1101) (b8ca08f)
• Make structs final to prevent accidental subclassing (#1085) (1c11b25)
• Prioritize pthread over of GCD APIs for getThreadName() (a9d5fad)
• Remove postinstall hook from individual packages (#1088) (e7eae48)
• Remove Swift struct setters, as they should be immutable (#1086) (78e17ba)

📚 Documentation

• Update comparison (500e26a)
• Update enum docs (e79c057)

Release 0.31.10

0.31.10 (2025-11-24)

✨ Features

• Add AnyMap.fromMap(..., ignoreIncompatible: ...) to Kotlin (#1059) (2ce6d08)

🐛 Bug Fixes

• Fix missing external imports in a Swift struct (#1056) (17cb9f1)
• Properly fix external types in Swift structs (#1056) (#1058) (e9d648e)

Release 0.31.9

0.31.9 (2025-11-20)

🐛 Bug Fixes

• Add explicit type for better TypeScript errors on wrapped callbacks on Nitro views (#1038) (bc51dfd)
• Destroy Kotlin Functions under jni::ThreadScope (#1052) (2bea9f4)
• Expose BoxedHybridObject as a public type (#1053) (8cb3fef)

Release 0.31.8

0.31.8 (2025-11-19)

🐛 Bug Fixes

• Fix (Error) => void not compiling on JNI (#1051) (d04af3d)

Release 0.31.7

0.31.7 (2025-11-18)

🐛 Bug Fixes

• Fix duplicate Swift imports (#1049) (6016187)

Release 0.31.6

0.31.6 (2025-11-12)

✨ Features

• Add explicit null type (#1032) (0c4306c)

🐛 Bug Fixes

• Fix Promise<T?> failing to resolve when passing null in Kotlin (#1034) (f12343c)
• Fix arrays of HybridObjects generating wrong fbjni/Kotlin code (#1039) (b17a556)
• Fix cases where Arrays of functions, AnyMap, ArrayBuffer or Promise<...> generates wrong Kotlin code (#1042) (60c71fc)
• Make JNull hold a global_ref instead of an alias_ref for static field NULL (#1040) (1a65bda)

Release 0.31.5

0.31.5 (2025-11-09)

✨ Features

• Add .resolve() and .resolved() overloads for Promise<Void> in Swift/Kotlin (#1020) (f86d450)
• Support complex/merged TS interfaces (#1030) (1183b44)

🐛 Bug Fixes

• Fix nitrogen init with spaces in path (#1026) (2760a79)
• Make .parallel [@preconcurrency](https://github.com/preconcurrency) (#1013) (2211d2d)

Release 0.31.4

0.31.4 (2025-10-30)

✨ Features

• Add AnyMap <> Any converters and AnyMap::merge (#1012) (6593698)

Release 0.31.3

0.31.3 (2025-10-28)

✨ Features

• Allow overriding toString() in Swift and Kotlin (#992) (ba73fe1)
  • Example: Swift / Kotlin

🐛 Bug Fixes

• Allow overriding base methods in Kotlin HybridObjects (#988) (7b542e0)
• Also use defineProperty(...) for Prototype Methods (#987) (3f1f072)
• Make Platforms in extends HybridObject<P> required (#1003) (69a760f)
• Make Kotlin struct hold native types again (#989) (f32425c)
• Throw if no generic args are passed (#1001) (d87385e)
• Throw in nitrogen if user wants to override a base member (like hashCode() in Kotlin.Any) (#991) (287dfe9)

📚 Documentation

• Make code samples more complete (#998) (389c028)
• Use callback(...) syntax in docs (#997) (a1b48e3)