fix: check that file exists in require calls

See the [no-unresolved](https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-unresolved.md) rule for details.

Author: David Brockman Smoliansky

babel.js

@@ -13,7 +13,7 @@ module.exports = {
     "import/no-duplicates": 0,
     "import/no-named-as-default": 2,
     "import/no-require": 0,
-    "import/no-unresolved": 2,
+    "import/no-unresolved": [2, { "commonjs": true }],
 
     "no-duplicate-imports": 2,
     "prefer-spread": 2,