Compatibility

SootSim’s compatibility data comes from a generated registry, not a hand-written “50+ stubs” list.

The source of truth is:

• packages/compat/src/registry.ts
• packages/compat/src/generated/site-snapshot.json
• packages/compat/src/generated/site-scan-data.json

Check your project

sootsim compat

That scan classifies packages as:

• Full support — the common runtime surface works
• Partial support — major APIs work, but some behavior is still missing
• Auto-stub — the package resolves through a basic fallback only
• Unsupported — the package still depends on native SDK behavior
• Not relevant — build/config packages tracked in the registry but excluded from runtime scoring

Regenerating the site snapshot

When the compat registry changes, regenerate the site data with:

bun scripts/generate-site-compat-snapshot.ts