Function rewriteUrl

test/url-rewriting.test.js:9–13

(req)

  t.plan(4)
  const fastify = Fastify({
    rewriteUrl (req) {
      t.assert.strictEqual(req.url, '/this-would-404-without-url-rewrite')
      this.log.info('rewriting url')
      return '/'
    }
  })

  fastify.route({