chore: add bundlesize integration

package.json

@@ -76,8 +76,9 @@
     "babel-preset-stage-3": "6.24.1",
     "babel-register": "6.26.0",
     "babel-runtime": "6.26.0",
+    "bundlesize": "0.17.0",
+    "cross-env": "5.1.4",
     "codecov": "3.0.4",
-    "cross-env": "5.2.0",
     "css-loader": "0.28.10",
     "element-react": "1.4.8",
     "element-theme-default": "1.4.13",
@@ -152,13 +153,14 @@
   "scripts": {
     "release": "standard-version -a -s",
     "prepublish": "in-publish && npm run build:webui && npm run code:build || not-in-publish",
-    "flow": "flow",
+    "flow": "flow check",
     "pretest": "npm run code:build",
     "test": "npm run test:unit",
     "test:unit": "cross-env NODE_ENV=test BABEL_ENV=test TZ=UTC jest --config ./jest.config.js --maxWorkers 2",
     "test:functional": "cross-env NODE_ENV=testOldEnv jest --config ./test/jest.config.functional.js --testPathPattern ./test/functional/index*",
     "test:e2e": "cross-env BABEL_ENV=testOldEnv jest --config ./test/jest.config.e2e.js",
-    "test:all": "npm run build:webui && npm run test && npm run test:functional && npm run test:e2e",
+    "test:size": "bundlesize",
+    "test:all": "npm run build:webui && npm run test && npm run test:functional && npm run test:e2e && npm run test:size",
     "pre:ci": "npm run lint && npm run build:webui",
     "commitmsg": "commitlint -e $GIT_PARAMS",
     "coverage:publish": "codecov",
@@ -186,6 +188,28 @@
       "pre-commit": "npm run lint"
     }
   },
+  "bundlesize": [
+    {
+      "path": "./static/vendor*.js",
+      "maxSize": "200 kB"
+    },
+    {
+      "path": "./static/[0-9].*.js",
+      "maxSize": "20 kB"
+    },
+    {
+      "path": "./static/[1-9].*.css",
+      "maxSize": "2.1 kB"
+    },
+    {
+      "path": "./static/0.*.css",
+      "maxSize": "45 kB"
+    },
+    {
+      "path": "./build/**/*.js",
+      "maxSize": "5.50 kB"
+    }
+  ],
   "license": "MIT",
   "commitlint": {
     "extends": [