collection.ts

import { collection, getFirestore } from "firebase/firestore"
import { defineStore } from "pinia"

type ExampleDoc = {
  name: string,
  age: number
}

export type State = {
  collectionData: ExampleDoc[] | null,
}
export const useExampleStore = defineStore('expamle', {
  state: (): State => {
    return {
      collectionData: null,
    }
  },
  actions: {
    async setup() {
      // Get Collection reference
      const store = getFirestore()
      const collectionRef = collection(store, 'Examples')

      // Do the magic
      this.sync('collectionData', collectionRef)
    }
  }
})