vant
v2.4.2-beta.2 vue component
dev
vant-cli dev lint
vant-cli lint test
vant-cli test build
vant-cli build release
vant-cli release bootstrap
yarn || npm i changelog
vant-cli changelog test:watch
vant-cli test --watch release:site
sh docs/site/release.sh test:coverage
open test/coverage/index.html 
