uni-niu-ui/uni_modules/niu-ui/index.js

import * as util from "./util"
import toast from "./extensions/toast"

export default {
	install(Vue) {
		const navbarData = Vue.observable({
			top: 0
		})
		Vue.prototype.$n = {
			navbar: navbarData,
			util: util,
			toast: toast
		}
	}
}