Дима Паутов

// store
export const state = () => ({
	functions: []
});

export const actions = {
  async loadFunction({ commit }) {
    try {
      const plans = await Parse.Cloud.run('getFunction', {}, {});
      commit('setFunction', plans);
    } catch (error) {
      commit('setFunction', null);
      return null;
    }
  },
};

export const mutations = {
	setFunction: (state, payload) => {
		state.functions = payload;
	}
}

// Ваш копонент, где вы отображаете TItem
<template>
	<div>
		<TItem
          v-for="(item, index) in functions"
          :key="index"
          :tplan="item"
          @delete="deleteItem(index)"
        />
	</div>
</template>

<script>
import { mapState } from 'vuex'

export default {
	//....
	computed: {
		...mapState([
			'functions'
		])
	}
	//...
}
</script>

<template>
  <div>
    {{ myProp }}
  </div>
</template>

import { mapState } from 'vuex'

export default {
  computed: {
    ...mapState([
      'myProp',
    ]),
  },
  watch: {
    myProp () {
      this.myMethod()
    },
  },
  methods: {
    myMethod () {
      console.log('Hello, world!')
    },
  },
}

updateQuantity: ({commit}, {lalala, id}) => {
            commit('setData', {lalala, id});
        }

...mapActions({
setUser: 'user/setUser'
}),

import { mapGetters } from 'vuex'

export default {
  name: 'CartInfoBox',
  computed: {
    ...mapGetters([
      'totalCount',
      'totalPrice'
    ])
  }
}

import { mapGetters } from 'vuex'

export default {
  name: 'CartInfoBox',
  computed: {
    ...mapGetters('cart', [
      'totalCount',
      'totalPrice'
    ])
  }
}