Evan Chan evnchn

Architectural Migration Strategy: NestJS v10 to v11 Ecosystem Upgrade

1. Executive Context and Strategic Overview

The transition from NestJS v10 to v11 represents a watershed moment in the framework's evolution, marking a decisive shift toward modern Node.js paradigms and strictly typed infrastructure. Unlike minor version upgrades that typically introduce non-intrusive features, this migration is characterized by structural modifications to the underlying HTTP abstraction layer, specifically the adoption of Express v5 as the default server engine.1 This change, coupled with the enforcement of Node.js v20+ runtime requirements 1, necessitates a comprehensive architectural audit rather than a simple dependency update.

For enterprise-grade applications relying on the dependency set specified—ranging from @nestjs/core to auxiliary libraries like @nestjs/bullmq and @nestjs/config—the migration surface area is broad. The interconnected nature of these packages means that a change in the core routi

	from __future__ import annotations

	import inspect
	from typing import Callable

	from nicegui import binding, ui
	from nicegui.elements.markdown import remove_indentation

	from ..style import create_anchor_name, subheading
	from .custom_restructured_text import CustomRestructuredText as custom_restructured_text

	import os
	import ssl
	import sys
	from datetime import UTC, datetime

	from cryptography import x509
	from cryptography.hazmat.backends import default_backend
	from cryptography.hazmat.primitives import serialization

	# Define log file path

	from nicegui import ui

	ui.add_head_html('''
	<style>
	.extra-compact, .extra-compact .q-field__control, .extra-compact .q-field__append, .extra-compact .q-field__control--addon {
	height: 30px !important;
	max-height: 30px !important;
	min-height: 30px !important;
	align-items: center;
	}

	# Pieced together from:
	# (1) https://github.com/Vizonex/Winloop?tab=readme-ov-file#how-to-use-winloop-with-fastapi
	# (2) https://www.reddit.com/r/nicegui/comments/1dlx3or/fastapi_nicegui_integration/
	# (3) https://github.com/pgjones/hypercorn?tab=readme-ov-file#quickstart
	from fastapi import FastAPI
	from fastapi.responses import HTMLResponse
	import winloop
	from hypercorn.config import Config
	from hypercorn.asyncio import serve
	import asyncio

	# Pieced together from:
	# (1) https://github.com/Vizonex/Winloop?tab=readme-ov-file#how-to-use-winloop-with-fastapi
	# (2) https://www.reddit.com/r/nicegui/comments/1dlx3or/fastapi_nicegui_integration/
	from fastapi import FastAPI
	from fastapi.responses import HTMLResponse
	import winloop
	import uvicorn
	import asyncio
	import datetime
	from nicegui import ui

	const True = true;
	const False = false;
	const None = undefined;

	let app = undefined;
	let mounted_app = undefined;

	const loaded_libraries = new Set();
	const loaded_components = new Set();

	print("__name__ is", __name__)
	DEV = True # True for development with hot reload, False for production with no hot reload

	from nicegui.ui_run import run as ui_run # just importing the function to run the server

	if not DEV or not __name__ == "__main__": # you can do `if True:` to bypass this to revert to the normal behavior, but that is slow...
	# Explanation: 2 reasons for running this code:
	# 1. not in dev mode, so there is no __mp_main__, this is already where NiceGUI will run
	# 2. or, in dev mode, and this is the __mp_main__, so we want to run this code

	from nicegui import ui

	class my_widget:
	def __init__(self, name, value):
	self.name = name
	self.value = value
	self.container = ui.row()

	self.create_widget()

	adg// NOTE: I only go so far as to ensure this works with the nicegui-speed
	// Based on NiceGUI 2.12.1

	const True = true;
	const False = false;
	const None = undefined;

	let app = undefined;
	let mounted_app = undefined;