urlData().path starts with "null/..." on Vercel or Railway with Fastify 5

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5.0.0

6.0.0

Linux

Unknown

When running Fastify with fastify-url-data on Vercel or Railway with Fastify 4, all works fine.

Running with Fastify 5, the "path" contains a leading "null/...", so the application breaks.

I suspect the following change for the problem:

Former plugin code was:

const urlData = fastUri.parse(scheme + '://' + host + path)`

The current code of the plugin was changed to:

const urlData = parse(`${scheme}://${host}:${port}${path}`)

I suspect that "port" is "null" when deploying on Vercel or Railway, therefere the fastUri-parser "fails".

The following example shows the problem:

import fastUri from "fast-uri";
console.log(fastUri.parse(`https://example.com:null/todos`).path);

It prints "null/todos".

Deployed on Vercel:

Here's the version deployed with fastify@4.28.1 and fastify-url-data@5.4.0, which works fine:

When no port is set, the code should omit the port definition, so the path-Attribute doesn't starts with "null/".

fastify / fastify-url-data