Exploring the possibilities of employing the Composition API within the Options API of Vue Js

Can you integrate the new Composition API into a traditional component that uses the Options API?

Here's my situation:

// ComponentA.js
import { reactive } from '@vue/composition-api'

export default {
  
  ////////////////////////////////////////////////////////////////
  setup() {

    //////////////////////////////////////////////
    // State
    const state = reactive({ 
      isSearching: false,
      searchText: '',
      isShowMoreResults: false,
      resultItems: [] 
    })

    //////////////////////////////////////////////
    const search = async (searchText) => {
      console.log("Searching... ", searchText)
    }

    //////////////////////////////////////////////
    const clear = async () => {
      console.log("Clear search")
    }

    //////////////////////////////////////////////
    const nextResults = async () => {
      console.log("Next Results")
    }

    ////////////////////////////////////////////////////////////////
    return {
      state,
      search,
      clear,
      nextResults
    }
  }
}

I'm trying to use it in a component using the "Options API" style. How can I go about importing this?

I attempted this approach, but encountered issues.

import useComponentA from 'ComponentA.js'

let { state } = useComponentA()

Answer №1

Your ComponentA.js file contains the actual component itself, along with the state and functions needed for functionality. To use ComponentA in another component like ComponentB, you simply import it as shown below:

// ComponentB
import ComponentA from 'ComponentA.js'

export default {
  components: { ComponentA },
  // ...
}

If you were to create ComponentA using the Options API exclusively, it would look similar to this structure:

export default {
  data() {
    return {
      isSearching: false,
      searchText: '',
      isShowMoreResults: false,
      resultItems: [] 
    };
  },
  methods: {
    async search() {...},
    async clear() {...},
    async nextResults() {...}
  }
}

In your current ComponentA example, you are not fully utilizing the Options API. However, you could mix both APIs by structuring your code like this:

// ComponentA.js
import { reactive } from '@vue/composition-api'

export default {
  setup() {
    const state = reactive({ 
      isSearching: false,
      searchText: '',
      isShowMoreResults: false,
      resultItems: [] 
    })
    return { state }
  },
  methods: {
    async search() {...},
    async clear() {...},
    async nextResults() {...}
  }
}

The Composition API offers better support for TypeScript and allows for more organized code within complex components. It's especially beneficial when working with TypeScript, as it provides clearer typing and organization for component data.

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