[cocossd]Upgrade to v2.2.2 (#662)

PROCESS

Author: lina128

coco-ssd/demo/.babelrc

@@ -1,18 +1,16 @@
 {
-    "presets": [
-      [
-        "env",
-        {
-          "esmodules": false,
-          "targets": {
-            "browsers": [
-              "> 3%"
-            ]
-          }
+  "presets": [
+    [
+      "env",
+      {
+        "esmodules": false,
+        "targets": {
+          "browsers": [
+            "> 3%"
+          ]
         }
-      ]
-    ],
-    "plugins": [
-      ["transform-runtime", {"polyfill": false}]
+      }
     ]
-  }
+  ],
+  "plugins": ["@babel/plugin-transform-runtime"]
+}

coco-ssd/demo/package.json

@@ -28,12 +28,11 @@
     "crypto": false
   },
   "devDependencies": {
-    "babel-core": "^6.26.3",
-    "babel-plugin-transform-runtime": "~6.23.0",
-    "babel-polyfill": "~6.26.0",
-    "babel-preset-env": "~1.6.1",
-    "babel-preset-es2017": "^6.24.1",
-    "babel-runtime": "6.26.0",
+    "@babel/core": "7.7.5",
+    "@babel/plugin-transform-runtime": "^7.7.6",
+    "@babel/preset-env": "^7.7.6",
+    "babel-plugin-external-helpers": "^6.22.0",
+    "babel-preset-env": "^1.7.0",
     "clang-format": "~1.2.2",
     "cross-env": "^5.2.0",
     "dat.gui": "^0.7.1",