Merge pull request #3076 from ApamNapat/turned_two_eslint_rules_on

Trailing whitespace and files not ending with \n are now illegal

.eslintrc.js

@@ -43,7 +43,7 @@ module.exports = {
     curly: ["off"],
     "default-case": ["off"],
     "dot-notation": ["off"],
-    "eol-last": ["off"],
+    "eol-last": ["error"],
     eqeqeq: ["off"],
     "for-direction": ["error"],
     "func-call-spacing": ["off"],
@@ -236,7 +236,7 @@ module.exports = {
     "no-ternary": ["off"],
     "no-this-before-super": ["off"],
     "no-throw-literal": ["error"],
-    "no-trailing-spaces": ["off"],
+    "no-trailing-spaces": ["error"],
     "no-undef": ["off"],
     "no-undef-init": ["error"],
     "no-undefined": ["off"],