How can you incorporate a personalized attribute into a Vue Component while using TypeScript without triggering error messages?

Here is a simple example to consider:

import Vue from 'vue';

Vue.extend({
  mounted() {
    this.something = null;
  }
});

https://i.sstatic.net/CiM9h.png

The above code is causing issues with TypeScript.

Is there a way to address this problem without adding my property to the data() property?

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