No changes compared to rc.3.

• Changed React.jsxKeyed(s), ReactDOM.jsxKeyed(s) having key as optional argument.
• Changed React.fragmentProps children field to optional.
• Removed the helper functions for JSX v4 from React.res.
• Made React.component conversion function zero cost.

• Fixed JSX PPX V3 backward compatibility.

• Added React 18 bindings.
• Added binding for React.isValidElement.
• Added backgroundFilter prop in ReactDOMStyle.
• Relaxed React version requirement to v18.0.0+.
• ReactDOM.domProps is now an alias for JsxDOM.domProps (defined in the compiler repo)
• Deprecated types ReactDOM.props, ReactDOM.Props.props, ReactDOM.Props.domProps.
• Deprecated ReactDOM.stringToComponent.

• RescriptReactErrorBoundary component now implemented using @react.component, so it is compatible with JSX V4.
• ReactV3 module added for backward compatibility to JSX V3. See the V3 compatibility mode
• Fixed react-dom/server and react-dom/test-utils imports.
• Fixed createRoot bindings.
• Added Keyboard.code binding.
• Renamed Changes.md to CHANGELOG.md to align with the rescript-compiler repo.

Breaking:

• IMPORTANT The React module has been modified in a breaking way to support the new JSX PPX V4.

• Removed the deprecation attribute from apis of the new jsx transform (introduced in React v17).

• New version requirements:

  • ReScript compiler V10.1+
  • ReactJS v18.2.0+