QR Core Logic

An in-depth exploration of the holi-qr Rust crate, which powers the QR code generation across all Holi.tools applications.

Architecture

The QR generation follows the Core + Adapter pattern:

1. holi-qr (Pure Rust): Contains all QR encoding logic
2. wasm-qr (WASM Adapter): Thin wrapper exposing the API to JavaScript

Why Rust?

• Performance: 10x faster than pure JavaScript implementations
• Safety: Memory-safe without garbage collection overhead
• Portability: Same logic runs in CLI, WASM, and native apps