adding component with mixin results in error TS2604

[emilefokkema]

First off, this may not be a problem with create-vue. It may be a problem in vue itself, or in typescript, or vue-tsc, or somewhere else. It may be related in some way to this discussion. I simply don't know. Maybe someone can help.

My problem occurs when I do the following:

• on windows. Node version 18.12.1. Npm version 9.2.0.
• execute npx create-vue@2.2.0, supplying the following options:
  • Add TypeScript? ... Yes
  • Add JSX Support? ... No
  • Add Vue Router for Single Page Application development? ... Yes
  • Add Pinia for state management? ... No
  • Add Vitest for Unit Testing? ... Yes
  • Add Cypress for End-to-End testing? ... No
  • Add ESLint for code quality? ... Yes
  • Add Prettier for code formatting? ... Yes
• the result is (something very close to) this commit
• remove a file to bypass this issue and make npm run build succeed. The result is (something very close to) this commit
• This introduces my problem: add two new components in the Vue.extend({ /*...*/}) way, with one of them having a mixins. Like this.

When I now run npm run build, I get

error TS2604: JSX element type 'SecondComponent' does not have any construct or call signatures.

I did not expect this error. Especially since I'm not doing anything related to react or jsx. Also: this is only a type-checking issue, because npm run build-only does succeed, as does actually running and displaying the app using npm run dev. What am I doing wrong?