6 - 浅层 ref

[cone41]

<script setup lang="ts">
import { shallowRef, triggerRef, watch } from 'vue';

const state = shallowRef({ count: 1 });

// Does NOT trigger
watch(
  state,
  () => {
    console.log('State.count Updated');
  },
  { deep: true }
);

/**
 * Modify the code so that we can make the watch callback trigger.
 */
state.value.count = 2;
triggerRef(state);
//state.value = { count: 2 };
</script>

<template>
  <div>
    <p>
      {{ state.count }}
    </p>
  </div>
</template>