pybricks-code/config/jest/babelTransform.js

'use strict';

const babelJest = require('babel-jest').default;

const hasJsxRuntime = (() => {
  if (process.env.DISABLE_NEW_JSX_TRANSFORM === 'true') {
    return false;
  }

  try {
    require.resolve('react/jsx-runtime');
    return true;
  } catch (e) {
    return false;
  }
})();

module.exports = babelJest.createTransformer({
  plugins: [
    ['@babel/plugin-transform-typescript', {
      allowDeclareFields: true
    }], 
    '@shopify/react-i18n/babel',
    "babel-plugin-transform-import-meta",
  ],
  presets: [
    [
      require.resolve('babel-preset-react-app'),
      {
        runtime: hasJsxRuntime ? 'automatic' : 'classic',
      },
    ],
  ],
  babelrc: false,
  configFile: false,
});