style: reformat all source code by prettier

lib/util.js

@@ -1,5 +1,5 @@
 module.exports = {
-  indexOf: function(arr, item) {
+  indexOf: function (arr, item) {
     var i, j;
     if (Array.prototype.indexOf) {
       return arr.indexOf(item);
@@ -11,7 +11,7 @@ module.exports = {
     }
     return -1;
   },
-  forEach: function(arr, fn, scope) {
+  forEach: function (arr, fn, scope) {
     var i, j;
     if (Array.prototype.forEach) {
       return arr.forEach(fn, scope);
@@ -20,15 +20,15 @@ module.exports = {
       fn.call(scope, arr[i], i, arr);
     }
   },
-  trim: function(str) {
+  trim: function (str) {
     if (String.prototype.trim) {
       return str.trim();
     }
     return str.replace(/(^\s*)|(\s*$)/g, "");
   },
-  spaceIndex: function(str) {
+  spaceIndex: function (str) {
     var reg = /\s|\n|\t/;
     var match = reg.exec(str);
     return match ? match.index : -1;
-  }
+  },
 };