test(e2e): wip e2e test for todomvc

package.json

@@ -10,7 +10,7 @@
     "size-compiler": "node scripts/build.js compiler-dom -p -f global",
     "size": "yarn size-runtime && yarn size-compiler",
     "lint": "prettier --write --parser typescript \"packages/**/*.ts?(x)\"",
-    "test": "jest",
+    "test": "node scripts/build.js vue -f global -d && jest",
     "test-dts": "node scripts/build.js reactivity runtime-core runtime-dom -t -f esm && tsd"
   },
   "types": "test-dts/index.d.ts",
@@ -37,6 +37,7 @@
     "@rollup/plugin-json": "^4.0.0",
     "@rollup/plugin-replace": "^2.2.1",
     "@types/jest": "^24.0.21",
+    "@types/puppeteer": "^2.0.0",
     "brotli": "^1.3.2",
     "chalk": "^2.4.2",
     "execa": "^2.0.4",
@@ -46,6 +47,7 @@
     "lint-staged": "^9.2.3",
     "minimist": "^1.2.0",
     "prettier": "~1.14.0",
+    "puppeteer": "^2.0.0",
     "rollup": "^1.19.4",
     "rollup-plugin-terser": "^5.1.1",
     "rollup-plugin-typescript2": "^0.24.0",