feat: Auto format code using prettier as pre-commit hook

[mischah]

We are using prettier to format JavaScript, JSON and SCSS files automatically before you commit your files to Git via a pre-commit hook.

The prettier settings are defined in .prettierrc in the project root. In case prettier is to opinated for you or you don’t want Prettier to change your files without the chance to review the changes you just have to delete the pre-commit hook with in the package.json:

"husky": {
  "hooks": {
    "post-merge": "npm install",
    "pre-commit": "lint-staged"
  }
}

But we totally recommend you to give this workflow a chance, because it’s just one more thing you don’t have to care about.