react-live@5.0.0

Major Changes

• #418 be53ccd - Support React 19 type definitions, add an exports map, drop engines, and raise the
  output target.

  LivePreview's overloads referenced the global JSX namespace, which @types/react@19
  removed. Because those types are emitted into the published declarations, consumers on React
  19 types failed to compile. They now use React.JSX, which resolves under both
  @types/react@18 and @types/react@19.

  The package also gains an exports map with separate types for the ESM and CJS conditions.
  Filenames are unchanged from 4.1.x (dist/index.js, dist/index.mjs, dist/index.d.ts), so
  main, module, and types resolve exactly as before. Subpaths other than
  ./package.json are no longer importable; only the package root was ever documented.

  Output is now built for es2022 rather than es6, so the bundle may contain syntax such as
  optional chaining that previous releases transpiled away.

  The engines field is gone, along with the node: ">= 0.12.0" and npm: ">= 2.0.0" it
  declared. Both were years out of date, and neither constrained anything real: this is browser
  code, so the Node version that installs it has no bearing on whether it runs. npm will no
  longer print an engine warning against those bounds.

  None of this changes the public API -- same exports, same props, same react >=18 peer
  range -- but the exports map and the raised output target are enough that a major release
  is the honest way to ship them.

• #421 004b007 - Type the live prop that withLive injects, instead of Record<string, unknown>.

  Wrapped components saw unknown for every key, so live.element could not be
  rendered and live.error could not be read without casting first. The prop now
  uses the same type the context is created with, which is the shape
  the docs
  have always described: code, error, element, onError, onChange.

  const Panel = withLive(({ live }) => {
    const Result = live.element; // was `unknown`, now a component
    return Result ? <Result /> : <pre>{live.error}</pre>;
  });

  Types only, with no runtime change. It is a narrowing, so a wrapped component
  that reads a key outside that shape off live will now fail to compile.

Patch Changes

• #418 be53ccd - Forward the Editor prism prop to prism-react-renderer. It was typed but never passed through, so a custom Prism instance was silently ignored.

• #418 be53ccd - Stop emitting React's __self and __source debug props from transpiled code.

  Sucrase adds these props to every element it compiles. They describe a source file, and there
  is no source file here -- the code comes from a live editor rather than from disk, so the
  filename sucrase emitted was always the empty string. React ignores both props, and React 19
  additionally treats __self as the signature of an outdated JSX transform, logging
  "Your app (or one of its dependencies) is using an outdated JSX transform" to the console of
  every page rendering a LiveProvider.

  Transpiling with sucrase's production option drops both props, and with them the
  _jsxFileName constant that the transform pipeline used to splice out and re-add solely to
  keep __source resolvable.

• #418 be53ccd - Add getDerivedStateFromError to the internal error boundary, so a runtime error in live code no longer logs a React warning about it.