Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the issue has not already been raised

Issue

Issue description

Trying to optimize AWS Lambda init duration on Node 20 and found the issue below.

• require('fastify') takes > 300 ms
• const {fastify} = await import("fastify") takes > 300 ms

Operating system
macOS, Linux, Windows

Node
Tested on Node 18 and Node 20

Fastify Version
4.27.0

Steps to reproduce

console.time('FASTIFY');
const Fastify = require('fastify');
const fastify = Fastify();
console.timeEnd('FASTIFY');

or

console.time('FASTIFY');
const {fastify} = await import('fastify');
console.timeEnd('FASTIFY');