Reconstruct sample-app with @vue/cli 3.0

sample-app/.gitignore

@@ -1,6 +1,21 @@
 .DS_Store
-node_modules/
-dist/
+node_modules
+/dist
+
+# local env files
+.env.local
+.env.*.local
+
+# Log files
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+# Editor directories and files
+.idea
+.vscode
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw*

sample-app/README.md

@@ -1,21 +1,21 @@
 # sample-app
 
-> A Vue.js project
-
-## Build Setup
-
-``` bash
-# install dependencies
-npm install
-
-# serve with hot reload at localhost:8080
-npm run dev
+## Project setup
+```
+yarn install
+```
 
-# build for production with minification
-npm run build
+### Compiles and hot-reloads for development
+```
+yarn run serve
+```
 
-# build for production and view the bundle analyzer report
-npm run build --report
+### Compiles and minifies for production
+```
+yarn run build
 ```
 
-For detailed explanation on how things work, checkout the [guide](http://vuejs-templates.github.io/webpack/) and [docs for vue-loader](http://vuejs.github.io/vue-loader).
+### Lints and fixes files
+```
+yarn run lint
+```

sample-app/babel.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+  presets: [
+    '@vue/app'
+  ]
+}