title: How to use Vue.util.extend in Vue 3?
body: <p><strong>How does one use Vue.util.extend in a Vue Component?</strong></p>
  <p>I need to copy data (with no references) from a prop and using <strong>Vue.util.extend({}, this.propData)</strong> was suggested, but there's no instructions on how to use that.</p>
  <p>What exactly do I have to import to get the helper function working?</p>
  <p>example-component.vue</p>
  <pre><code>&lt;script&gt;
  import Vue ...???
  
  export default {
  
    props: {
      propData: Array
    }
  
    data() {
      return() {
        localPropData: Vue.util.extend({}, this.propData)
      }
    }
  }
  &lt;/script&gt;
  </code></pre>
  <p>Even links to some form of documentation on this would be helpful. For now I decided to just use JSON.parse(JSON.stringify(this.propData)) which works perfectly fine.</p>
  <p>Using Vue 3 via Laravel 8</p>