githubmirror/gutenberg

tools/react-19/react-jsx-runtime.js

42 строки1 KB

Jarda Snajdr

React 19 patch: log warnings when polyfills are hit (#79624)

29 июн 2026, 15:55

29 июн 2026, 15:55463e4a9

const jsxRuntime = require( 'react/jsx-runtime' );
const { warnCompat } = require( './warn-compat' );

function applyDefaultProps( type, config ) {
	if ( ! type || ! type.defaultProps ) {
		return config;
	}

	warnCompat(
		'jsx-default-props',
		'`defaultProps` on function components was removed in React 19 and is emulated by a compatibility polyfill. Use default parameters instead.'
	);

	const defaultProps = type.defaultProps;
	let props = config;

	for ( const propName in defaultProps ) {
		if ( props[ propName ] === undefined ) {
			// Clone lazily so the caller's config object is never mutated.
			if ( props === config ) {
				props = { ...config };
			}
			props[ propName ] = defaultProps[ propName ];
		}
	}

	return props;
}

function jsx( type, config, maybeKey ) {
	return jsxRuntime.jsx( type, applyDefaultProps( type, config ), maybeKey );
}

function jsxs( type, config, maybeKey ) {
	return jsxRuntime.jsxs( type, applyDefaultProps( type, config ), maybeKey );
}

module.exports = {
	...jsxRuntime,
	jsx,
	jsxs,
};