deep-sort-object: preserve array order in package.json

Fixes: #10063
PR-URL: #10185
Credit: @substack
Reviewed-By: @iarna

lib/utils/deep-sort-object.js

@@ -3,7 +3,11 @@ var sortedObject = require('sorted-object')
 
 module.exports = function deepSortObject (obj, sortBy) {
   if (obj == null || typeof obj !== 'object') return obj
-  if (obj instanceof Array) return obj.sort(sortBy)
+  if (obj instanceof Array) {
+    return obj.map(function (x) {
+      return deepSortObject(x, sortBy)
+    })
+  }
   obj = sortedObject(obj)
   Object.keys(obj).forEach(function (key) {
     obj[key] = deepSortObject(obj[key], sortBy)