Vue2-Sub-App

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When I was developing a company project using Vue2, because of the card-style development, each component can be individually packaged into a JS resource that is loaded into the current page via the card loader. When the card functionality is particularly complex (so complex that it can stand alone as an application), I want to get the current card root component instance in the descendant component of the current card (Similar to $root attribute), and components like RouterLink and RouterView have to take a different approach. Of course, these can be completely simulated by provide + inject, v-if, etc. However, I wanted to make it simpler, so here it is!

Install

# npm
npm install vue2-sub-app --save

# yarn
yarn add vue2-sub-app

# pnpm
pnpm install vue2-sub-app

Usage

Full Import

// main.js
import Vue from 'vue'
import Vue2SubApp from 'vue2-sub-app'

Vue.use(Vue2SubApp)

new Vue({
  /* ... */
})

Manually Import

<script>
import { defineSubRoot, SubRouterLink, SubRouterView } from 'vue2-sub-app'

export default defineSubRoot({
  components: { SubRouterLink, SubRouterView },
  props: {},
  data() {
    return {
      /* ... */
    }
  },
  methods: {},
})
</script>

APIs

defineSubRoot(config)

config: component option object.

The current component is defined as a child-root component, and all descendant components of the component can get an instance of the current component through this.$subRoot.

<!-- Parent.vue -->
<template>
  <Child />
</template>
<script>
  import Child from 'Child.vue'

  export default defineSubRoot({
    components: { Child },
    props: {},
    data() {
      return {
        /* ... */
      }
    },
    methods: {},
  })
</script>

<!-- Child.vue -->
<script>
  export default {
    created() {
      console.log(this.$subRoot) // this.$subRoot == the instance of Parent.vue
    },
  }
</script>

Options

isSubRoot

type: boolean

If Manually Import is used, configure this property in the exported component options to make the current component a child-root component.

export default {
  isSubRoot: true, // <---
  components: {},
  props: {},
  data() {
    return {}
  },
  methods: {},
}

subRoutes

type: Array<{ path: string, component: VueComponent }>

Configure subrouting information in the exported component options.

export default defineSubRoot({
  subRoutes: [
    {
      path: '/child-one',
      component: () => import('./components/ChildOne.vue'),
    },
    {
      path: '/child-two',
      component: () => import('./components/ChildTwo.vue'),
    },
  ],
  props: {},
  data() {
    return {
      /* ... */
    }
  },
  methods: {},
})

Instance

$subRoot

type: VueComponent

The child-root component instance closest to the current component.

$subRoute

type: SubRoute

The current subroute.

Props

$subRoute.path

Location of the current subroute.

$subRoute.params

Parameter of the current subroute.

$subRouter

type: SubRouter

The subrouter instance.

Methods

$subRouter.push(path, params?)

Navigate to the new subrouting location.

$subRouter.replace(path, params?)

Replace the current subroute location.

$subRouter.pop()

Back up to the next subroute.

Components

SubRouterLink

Props

to

type: string

The location of the target subroute.

tag

type: string

default: "a"

Specify which tag <SubRouterLink> is rendered to.

SubRouterView

Renders the component corresponding to the current subroute.