Put prettier config in own file

Author: FSVetaz

prettierConfig.js

@@ -0,0 +1,2 @@
+// See https://prettier.io/docs/en/options.html
+module.exports = { printWidth: 120, singleQuote: true, semi: false }

prettierSetup.js

@@ -1,16 +1,10 @@
 // this is following the pattern defined here
 // https://github.com/prettier/eslint-plugin-prettier#recommended-configuration
+const prettierConfig = require('./prettierConfig')
+
 module.exports = {
   extends: ['plugin:prettier/recommended'],
   rules: {
-    'prettier/prettier': [
-      'warn',
-      {
-        arrowParens: 'always',
-        printWidth: 120,
-        semi: false,
-        singleQuote: true,
-      },
-    ],
+    'prettier/prettier': ['warn', prettierConfig],
   },
 }