Learn SWIFT-WASM with Real Code Examples
Updated Nov 25, 2025
Performance Notes
SwiftWasm performance is near-native for compute tasks
Binary sizes larger than TinyGo but smaller than full Swift native
Use optimization flags -Osize or -O for best results
Avoid creating too many bridging calls between Swift and JS
Prefer typed arrays for data exchange
Security Notes
Wasm sandbox isolates Swift code safely
WASI restricts filesystem/network access
Safer than running Swift natively for untrusted code
Memory management is deterministic and safe
Interop functions must sanitize inputs properly
Monitoring Analytics
Use browser devtools for profiling
Measure Wasm memory usage
Use custom JS logs
Integrate with analytics SDKs
Edge runtime profiling for WASI
Code Quality
Use Swift linting tools
Avoid heavy bridging
Keep modules small
Prefer pure Swift logic
Document JS APIs clearly