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Android1App Store1C++1Cluster1CSS Specificity1CSS-in-JS1Emotion1Erlang1Input Method1iOS2JavaScript2Loaders1Networking1Node.js1Observables1Prerendering1Qt1React2React Native2RxJS2String Processing1WebEngine1Webpack2Windows2
© 2026 HUANG Cheng
All Posts
Qt and React Hybrid Development
Problem and Exploration A recent project posed an interesting question: how do you render AI chat responses with a typewriter effect inside a Qt app? One…
Feb 18, 2025
Detecting App Store Updates in React Native
Sometimes you ship an exciting new feature and want to prompt users to update right away. NetEase Cloud Music — a React Native app — does exactly this.…
Nov 15, 2024
A Little Pitfall in Erlang String Handling
I stumbled upon echo.opera.com — a service that prints out HTTP request headers — and thought it would be fun to build my own. After implementing echo_rs in…
Sep 26, 2024
Recursion in RxJS
The requirement: after a user selects or photographs an image, send it to an image-recognition API. The API rejects images over a certain size and returns…
Aug 1, 2024
The Mystery Behind RxJS iif
A common pattern in business logic: branch on a precondition to decide which API to call. For order payment, if it's a new order call the create-order…
Jun 22, 2024
React Native Pitfalls and Fixes
Publishing to Android App Stores Rejected for Privacy Violations Some Chinese app stores will reject your app with a message like "SDK reads private user…
Jun 3, 2024
Listing and Switching Input Methods on Windows
Approach 1: Via Keyboard Layout Limitation Extracting the layout ID is non-trivial — the code above uses a simplified low-word extraction. For a thorough…
Apr 20, 2024
Pre-rendering React Apps with Webpack
Background For various reasons — performance, SEO, accessibility — it's desirable for React (or other virtual DOM) apps to serve a static version of the page…
May 7, 2023
Handling CSS-in-JS Style Conflicts
A component library built with was repeatedly getting its styles overridden when integrated into a project that used multiple tech stacks. As you can see in…
Apr 22, 2023
Inside Webpack Loaders and Rules
The Problem A webpack-based React project worked fine on macOS and Linux but threw an error on Windows when processing SCSS: Re-installing and confirmed they…
Sep 29, 2022
Why Doesn't Listening on the Same Port in Multiple Node.js Cluster Workers Throw EADDRINUSE?
The Node.js docs show this pattern without any explanation of why it works: Everyone knows that listening on a port twice throws: And indeed, without : So how…
Sep 26, 2022
HUANG Cheng
HUANG Cheng

Full-stack engineer with 12 years of experience, specialising in frontend architecture, performance optimisation, and AI integration. Comfortable across the full stack — from browser to infrastructure.

What I work on

I build things that ship. From enterprise platforms serving 2,000+ locations and 8,000 people, to a React component library used by 500+ developers, to low-code tools that turned multi-day tasks into minutes. I care about correctness, speed, and the human on the other end of the screen.

Recently, a lot of my thinking has been around AI integration — how to wire language models into products in ways that actually improve outcomes rather than just adding a chatbot.

Side projects

  • Icon Search — find and download high-quality app icons, fast
  • Holiday Progress — see where you are in the year's public holidays
  • SwiftMinuteRepeater — macOS menu bar app that chimes the time like a luxury watch
  • MinuteRepeater — the same idea, cross-platform, in C++ and Qt
  • Harper — JetBrains plugin for real-time grammar checking in your IDE

Links

Personal site · GitHub