import-jsx/transform.js

Require and transpile JSX on the fly

// Only load these if compiled source is not already cached
let babel;
let reactPreset;

const transform = async (source, filename) => {
	if (!babel) {
		babel = await import('@babel/core');
		reactPreset = await import('@babel/preset-react');
	}

	const presets = [
		[
			reactPreset.default,
			{
				runtime: 'automatic',
				pure: false,
				useBuiltIns: true,
				useSpread: true
			}
		]
	];

	const result = await babel.transformAsync(source, {
		presets,
		filename,
		sourceMaps: 'inline',
		babelrc: false,
		configFile: false
	});

	return result.code;
};

export default transform;