prettier-standard | Formats with Prettier and lints with ESLint+Standard | Code Analyzer library

I created a small JS module which I intend to make an npm package, but for now is just on GitHub. This module is written in ES6 and SCSS, and is thus relying on webpack and babel for transpilation.

To test it, I created a separate project with a similar setup (webpack and babel). After npm installing my module, when trying to import it into my index.js, I get the following error in Chrome Developer Tools: (with x being my module's name)

Ok, I never faced this problem before. It's very strange. I've a package.json scripts as folowed:

I am using prettier-standard because the project uses the standard for linting.

Following the prettier pre-commit hook example I am running prettier on commits. However I would like to ignore the package.json file. I tried adding package.json to a .prettierignore file but this did not work.

Code from the prettier pre-commit hook example that I am using in my package.json

Creating a basic app using create-react-app works fine using npm start but once I moved it over to firebase serve I get

Uncaught SyntaxError: Unexpected token <

I followed all the instructions and muy firebase.json looks good, as well as my .firebaserc