Third-party components using the component library in the applet

Program development in small and sometimes I have to use third-party components, with the following component libraries, for example Vant Weapp

There are two ways:

First, download them directly to github source code.

Specifically to see the brother article: https://www.jianshu.com/p/7c6a798c6d57

Second, by the way npm

Specifically to see the brother article: https://segmentfault.com/a/1190000016376876