Using types in definePage() in beforeEnter()

[AnnaYuS]

I'm trying to use ts types in beforeEnter() guard in definePage()

type Dashboard2 = {
  name: string;
};
definePage({
  name: 'About things',
  beforeEnter: () => {
    const x: Dashboard2 = {
       name: 'Jenn',
    };
    console.log(x);
  },
});

And this breaks with
Uncaught SyntaxError: Missing initializer in const declaration

here is small reproduction: https://stackblitz.com/edit/github-ka9cvmwr?file=src%2Fpages%2Fabout.vue

Should this work? It looks like a bug. Is there a way around it?