flowydStrongly-typed SOP state machines

Typed workflow state machines for TypeScript — compile-time safe on every state ID, action, and payload.

Compile-time type safety

State IDs, action names, and payloads — all checked by the compiler. Typos never reach runtime.

One Zod schema per payload drives both the TypeScript type and the runtime check. No duplication.

Fork fans out to concurrent steps; join re-synchronises them with "all", "any", or a quorum threshold.

Time-triggered transitions escalate or auto-cancel a stalled step after a delay. The host owns the clock, so runs stay pure and replayable.

Pause until your service layer signals completion — a webhook, a job, a human elsewhere. No I/O in the engine.

getSnapshot() is plain JSON; restoreInstance() rebuilds exact state. You own the database — the library owns nothing.

Export to Mermaid or a JSON graph for React Flow, D3, or Cytoscape — with live status overlays.