update worker

package-lock.json

@@ -1491,9 +1491,9 @@
       "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8="
     },
     "browser-demote": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/browser-demote/-/browser-demote-1.0.6.tgz",
-      "integrity": "sha512-xQvaaQ4L7EszxkOkodl3nVNiI3HF2q8RSS4Quon3iGyKjj9j1qqD7/5TNOtZHRhNULW0KeFpfEl/lnZVkYfaCQ=="
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/browser-demote/-/browser-demote-1.1.2.tgz",
+      "integrity": "sha512-EyYeWyJe/ZrbhxkjN+A/uxWtUEvQ8f73R+jEZeBipbq7lcBLPDLE7WiAnBK4I+XryFGsKGeV3RLWIgAsasxS3g=="
     },
     "browser-sync": {
       "version": "2.23.6",
@@ -2840,7 +2840,7 @@
       "dependencies": {
         "graceful-fs": {
           "version": "4.1.11",
-          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.11.tgz",
+          "resolved": "http://registry.npm.taobao.org/graceful-fs/download/graceful-fs-4.1.11.tgz",
           "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg="
         }
       }

package.json

@@ -29,7 +29,7 @@
   },
   "dependencies": {
     "art-template-loader": "^1.4.3",
-    "browser-demote": "^1.0.6",
+    "browser-demote": "^1.1.2",
     "chalk": "^2.4.1",
     "commander": "^2.15.1",
     "gulp-contrib-copy": "^0.1.3",