Vue3 Composition Api watch store value

component-watch-store.vue

<template>
  <!-- trigger change value -->
  <button @click="onChange">💎</button>
    {{myvalue}} <!-- listen value terbaru -->
  </button>
</template>

<script>
import {computed} from "vue";
import {useStore} from "vuex";
export default {
  setup(){
    const store = useStore();
    
    store.watch((state, getters) => getters.fetchEpoch, (valBaru, valLama)=>{
      console.log('value changes detected via vuex watch', [valBaru, valLama]);
    })
    
    return {
      onChange: () =>{
        // push perubahan
        store.commit("PUT_EPOCH");
      },
      
      //get current value 
      myvalue: computed(() => store.getters.fetchEpoch),
    }
  }
}
<script>