Prewarm

An interactive website explaining why preheating your coffee mug keeps your coffee warmer for longer.

Live site: prewarm.coffee

What is this?

A single-page application that:

• Explains the physics of heat transfer in coffee mugs
• Lets you adjust mug properties (material, size, thickness)
• Shows temperature curves over time
• Compares preheated vs cold mugs

Built with Rust and WebAssembly.

Tech Stack

• Rust + Leptos: WASM-based reactive web framework
• Trunk: WASM build tool and dev server
• Hosting: GitHub Pages

Development

Prerequisites

• Rust (stable)
• Trunk: cargo install trunk
• WASM target: rustup target add wasm32-unknown-unknown

Commands

make serve         # Dev server with hot reload
make build-release # Production build
make test          # Run tests
make fmt           # Format code
make lint          # Run clippy
make help          # Show all targets

Deployment

Pushes to main automatically deploy to GitHub Pages via GitHub Actions.

License

AGPL-3.0 - See LICENSE for details.

For commercial licensing inquiries, please contact the author.