Issue: The variable 'HelloWorld' has been declared but not utilized

Why am I encountering an error when using TypeScript, Composition API, and Pug templating together in Vue 3? How do I resolve this issue when importing a component with the Composition API and using it in a Pug template?

Answer №1

It seems like the issue might be caused by having typescript preinstalled. To solve this, try removing typescript as the script language:

<script setup>

instead of

<script setup lang="ts">

If you prefer to keep typescript, then you may need to adjust how typescript-components differ from plain js components. While I'm not very familiar with Typescript, it does alter component behavior as it relies more on Typescript rather than javascript. You can refer to the Vue 3 documentation for guidance on using Typescript with Vue.

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