Warns you that a not registered component is being used in the template

[jesusgn90]

Please describe what the rule should do:

Warns you that a component is being used in the template and the component is not registered.

What category should the rule belong to?

• Enforces code style
• Warns about a potential error
• Suggests an alternate way of doing something
• Other (please specify:)

Provide 2-3 code examples that this rule should warn about:

<template>
   <some-component />
</template>

<script>
export default {
   name: 'Foo',
}
</script>

Being SomeComponent a component that was not registered.

Additional context

[sinaa]

This would be a really useful lint rule to have. 👍

Current answer on StackOverflow ( https://stackoverflow.com/questions/57615609/can-i-fail-a-vue-js-build-on-unregistered-components ) suggests that there's no nice and simple way to get lint warning/failure when unregistered components are used.

The popularity of that question also indicates considerable demand for this feature.