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Changelog

0.1.1 (2026-10-20)

No changes to the editor. The core is republished so that npm shows the rewritten README (the banner, the demo and the API tables) and its homepage points at the docs site. The fifteen language packages move to 0.1.1 with it, unchanged.

0.1.0 (2026-10-19)

The first release: react-native-codepad and fifteen language packages, published together.

Editor

  • The editing core runs in Kotlin and Swift on the platform text APIs: selection with handles, the edit menu, soft keyboard composition, undo and redo with typing coalescing, auto indent, auto closing brackets and quotes, bracket matching, a read only mode and a placeholder.
  • Hardware keyboards use the full key table, and the toolbar API (moveCaret, typeText, deleteBackward, deleteForward) drives the same paths from JavaScript.
  • The view draws line numbers, soft wraps or scrolls horizontally, scrolls to a line, reveals the selection, reports the caret rect and the visible lines, takes content insets, and follows the keyboard animation frame by frame with avoidKeyboard.
  • Search takes literal or regex queries with case and whole word options, finds next and previous, replaces one or all matches and paints them. The scan runs on a worker.

Highlighting

  • Highlighting is incremental tree-sitter parsing on a background thread, with injections for fenced blocks, embedded script and style, and tagged templates. Injected trees survive the edits that do not reach them.
  • Fifteen language packages are generated from the nvim-treesitter queries: C, CSS, Go, HTML, Java, JavaScript, JSON, Kotlin, Markdown, Python, Rust, Swift, TSX, TypeScript and YAML. Install only the ones you use.
  • Three themes are keyed by capture name with prefix lookup, so nvim-treesitter themes port by renaming.

Bindings

  • The Nitro view has a delta onChange, selection, scroll and focus events, onContentSizeChange, sync readers on the JS thread and async writers that resolve once applied. Offsets are UTF-16, the same as JavaScript strings.

Platforms

  • It runs on Android API 24 and up and on iOS 17 and up, with React Native 0.81 or newer on the New Architecture.
  • The two engines run the same test vectors, and the keyboard recordings replay on the JVM. The iOS numbers come from the simulator. Measurements from a physical iPhone are still missing.

Not in this release

Autocomplete, an LSP client, code folding, a minimap, multiple cursors, diagnostics, font ligatures, bidi editing and web. Each is tracked as an issue on GitHub.