fix: add prettier rules to eslint

jest-transformer.js

@@ -1,4 +1,4 @@
-const babelPreset = require(`babel-preset-medusa-package`)();
+const babelPreset = require(`babel-preset-medusa-package`)()
 module.exports = require(`babel-jest`).createTransformer({
   ...babelPreset,
-});
+})