Drex (Decision Model)

import { NdiClient, UnknownAnswer } from "ndi-sdk";

const client = new NdiClient();
const result = await client.systemone.evaluate({
  state: { vendor: "Acme Freight", amount: 1200, purchase_order: "PO-4411" },
  questions: {
    approve: {
      type: "noul",
      criteria: { true: "The invoice matches an open purchase order", false: "No purchase order covers it" },
    },
    risk: {
      type: "choice",
      instructions: "How risky is paying this invoice?",
      criteria: { low: null, high: "Unusual vendor, amount, or terms" },
    },
    urgency: { type: "score", criteria: ["not urgent", "this week", "today"] },
  },
});

for (const [name, answer] of Object.entries(result.answers)) {
  if (answer instanceof UnknownAnswer) {
    console.log(name, answer.type, answer.data);
  } else if (answer.type === "noul") {
    console.log(name, answer.noul);
  } else if (answer.type === "choice") {
    console.log(name, answer.choice, answer.probabilities);
  } else {
    console.log(name, answer.legend[Math.round(answer.score)], answer.probabilities);
  }
}

evaluate(
  opts: {
    state: SystemOneState;
    questions: Record<string, Question>;
  },
): Promise<SystemOneResponse>