app: add babel plugin for @decorators

Author: asapzacy

.babelrc

@@ -17,6 +17,7 @@
   "plugins": [
     "react-hot-loader/babel",
     "transform-react-stateless-component-name",
+    ["@babel/plugin-proposal-decorators", { "legacy": true }],
     "@babel/plugin-proposal-class-properties",
     [
       "@babel/plugin-transform-runtime",

package.json

@@ -44,6 +44,7 @@
   "devDependencies": {
     "@babel/core": "^7.4.5",
     "@babel/plugin-proposal-class-properties": "^7.4.4",
+    "@babel/plugin-proposal-decorators": "^7.4.4",
     "@babel/plugin-transform-runtime": "^7.4.4",
     "@babel/preset-env": "^7.4.5",
     "@babel/preset-react": "^7.0.0",
@@ -66,6 +67,8 @@
     "enzyme-adapter-react-16": "^1.5.0",
     "eslint": "^5.16.0",
     "eslint-config-standard": "^10.2.1",
+    "eslint-plugin-import": "^2.17.3",
+    "eslint-plugin-node": "^9.1.0",
     "eslint-plugin-promise": "^3.4.1",
     "eslint-plugin-react": "^7.0.1",
     "eslint-plugin-standard": "^3.0.1",