Add trailing commas to ESLint + Prettier

packages/insomnia-httpsnippet/test/targets/javascript/xhr.js

@@ -7,14 +7,14 @@ require('should');
 module.exports = function(HTTPSnippet, fixtures) {
   it('should not use cors', function() {
     var result = new HTTPSnippet(fixtures.requests.short).convert('javascript', 'xhr', {
-      cors: false
+      cors: false,
     });
 
     result.should.be.a.String;
     result
       .replace(/\n/g, '')
       .should.eql(
-        'var data = null;var xhr = new XMLHttpRequest();xhr.addEventListener("readystatechange", function () {  if (this.readyState === this.DONE) {    console.log(this.responseText);  }});xhr.open("GET", "http://mockbin.com/har");xhr.send(data);'
+        'var data = null;var xhr = new XMLHttpRequest();xhr.addEventListener("readystatechange", function () {  if (this.readyState === this.DONE) {    console.log(this.responseText);  }});xhr.open("GET", "http://mockbin.com/har");xhr.send(data);',
       );
   });
 };