Remove trailing commas from source code

Fixes #5

Author: SimenB

package.json

@@ -30,7 +30,7 @@
   },
   "prettier": {
     "singleQuote": true,
-    "trailingComma": "all"
+    "trailingComma": "es5"
   },
   "lint-staged": {
     "*.js": ["eslint --fix", "git add"],

rules/__tests__/no_identical_title.test.js

@@ -21,10 +21,10 @@ ruleTester.run('no-identical-title', rules['no-identical-title'], {
     ['it("it1", function() {});', 'it("it2", function() {});'].join('\n'),
     ['it.only("it1", function() {});', 'it("it2", function() {});'].join('\n'),
     ['it.only("it1", function() {});', 'it.only("it2", function() {});'].join(
-      '\n',
+      '\n'
     ),
     ['describe("title", function() {});', 'it("title", function() {});'].join(
-      '\n',
+      '\n'
     ),
     [
       'describe("describe1", function() {',
@@ -101,7 +101,7 @@ ruleTester.run('no-identical-title', rules['no-identical-title'], {
     },
     {
       code: ['it("it1", function() {});', 'it("it1", function() {});'].join(
-        '\n',
+        '\n'
       ),
       errors: [
         {
@@ -126,7 +126,7 @@ ruleTester.run('no-identical-title', rules['no-identical-title'], {
     },
     {
       code: ['fit("it1", function() {});', 'it("it1", function() {});'].join(
-        '\n',
+        '\n'
       ),
       errors: [
         {

rules/prefer_to_have_length.js

@@ -23,7 +23,7 @@ module.exports = context => {
             .getFirstTokenBetween(
               argumentObject,
               argumentProperty,
-              token => token.value === '.',
+              token => token.value === '.'
             );
           context.report({
             fix(fixer) {