Disable @typescript-eslint/explicit-function-return-type rule in JS files. (#351)

* Disable @typescript-eslint/explicit-function-return-type rule in JS files.

* Remove disable comments

* Update files

Author: munierujp

example/example.js

@@ -4,8 +4,6 @@
  * @param {string} userName - user name
  * @returns {void}
  */
-// FIXME: https://github.com/mightyiam/eslint-config-love/issues/1525
-// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
 const sayHello = (userName) => {
   console.log(`Hello, ${userName}`)
 }

index.js

@@ -13,6 +13,10 @@ const config = {
     'plugin:sonarjs/recommended',
     'plugin:@eslint-community/eslint-comments/recommended'
   ],
+  rules: {
+    // https://typescript-eslint.io/rules/explicit-function-return-type/#configuring-in-a-mixed-jsts-codebase
+    '@typescript-eslint/explicit-function-return-type': 'off'
+  },
   overrides: [
     // For JavaScript
     {
@@ -34,7 +38,9 @@ const config = {
         'tsdoc'
       ],
       rules: {
-        'tsdoc/syntax': 'warn'
+        'tsdoc/syntax': 'warn',
+        // https://typescript-eslint.io/rules/explicit-function-return-type/#configuring-in-a-mixed-jsts-codebase
+        '@typescript-eslint/explicit-function-return-type': 'error'
       }
     }
   ]