In svelte, whenever the value of someVar changes, this one-liner will be executed.
$: console.log({someVar});
Referred to as a reactive declaration by Svelte, the code following the $ symbol, known as the "destiny operator," will run every time any variables it depends on are updated.
This feature is particularly handy for debugging. I wonder if Vue offers something similar?
A function that is similar to the API discussed above would likely be watchEffect():
watchEffect(() => console.log(someVar.value))
For example:
<script setup>
import { ref, watchEffect } from 'vue'
const someVar = ref(0)
watchEffect(() => console.log(someVar.value))
</script>
<template>
<button @click="someVar++">Increment {{ someVar }}</button>
</template>
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