Enable prettier eslint plugin

.eslintignore

@@ -1,4 +1,4 @@
-spec/fixtures/**/*.js
+**/spec/fixtures/**/*.js
 node_modules
 /vendor/
 /out/

.eslintrc.json

@@ -25,7 +25,7 @@
   "rules": {
     "standard/no-callback-literal": ["off"],
     "node/no-deprecated-api": ["off"],
-    "prettier/prettier": ["off"] // disable prettier rules for now.
+    "prettier/prettier": ["error"]
   },
   "overrides": [
     {
@@ -41,4 +41,4 @@
       }
     }
   ]
-}
+}

.prettierrc

@@ -1,4 +1,3 @@
 {
-  "semi": false,
   "singleQuote": true
 }