Lesson 5: FooLogicStep — Deterministic Bridge

Role in the Flow

After both cities are captured, WeatherStep transitions into FooLogicStep. No LLM is involved — this is pure control-plane logic.

Implementation

export class FooLogicStep extends LogicStep {
  constructor(flow: Flow, isActive = false) {
    super(FooLogicStep, flow, isActive);
  }

  public async runLogic(): Promise<LogicResponseType> {
    return { step: GooLogicStep, state: { fooData: 'fooValue' } };
  }
}

• Synchronously computes/attaches fooData.
• Immediately hands control to GooLogicStep.
• Skips the LLM loop entirely (fast and cheap).

Pattern Notes

• Use LogicSteps for deterministic routing, DB writes, or enrichment.
• Return { step, state } to pass values forward without touching memory history.

Next: GooLogicStep (another deterministic hop that routes into FavoritesStep).