const isTest = process.env.APP_ENV === 'test'; const isMocked = Boolean(process.env.APP_MOCKED_CLIENT); module.exports = { presets: [ [ '@babel/typescript', ], [ '@babel/preset-env', ], [ '@babel/preset-react', ], ], plugins: [ '@babel/plugin-transform-class-properties', '@babel/plugin-syntax-nullish-coalescing-operator', '@babel/plugin-transform-logical-assignment-operators', ...(isTest && !isMocked ? ['babel-plugin-transform-import-meta'] : []), ], };