<template> <h1>I am valid</h1> </template> <script> export default { validate({ query }) { return new Promise((resolve, reject) => { setTimeout(() => { if (query.error) { const err = new Error('Custom Error') err.statusCode = parseInt(query.error) || 500 reject(err) } else { resolve(Boolean(query.valid)) } }, 500) }) } } </script>