watchEffect is not same as vue3 watchEffect?

[gitHber]

setup() {
    const num = ref(0);
    watchEffect(() => {
      console.log("num change will not trigger this effect");
      num.value = 1;
    });
    setTimeout(() => {
      num.value++;
    }, 5000);
    return {
      num
    };
  }

in vue3, it's right, watchEffect only triggered by value getter(not setter), in composition-api, it will triggered by value setter which means it's not right

vue3-demo https://stackblitz.com/edit/vue-qfisdz
sorry, I did't create a demo for @vue/composition-api.

[prigaux]

NB : this bug breaks the asyncComputed function suggested in foxbenjaminfox/vue-async-computed#104 .

(i'm trying to transition from vue2->vue3 by gradually migrating from "options API" to "composition API" with vue2)

[gitHber]

NB : this bug breaks the asyncComputed function suggested in foxbenjaminfox/vue-async-computed#104 .

(i'm trying to transition from vue2->vue3 by gradually migrating from "options API" to "composition API" with vue2)

just for additional, watch api only triggered when watcher value change, but watchEffect api would triggered when watcher value set

[ygj6]

Solved by #786.