feat(settings): add emulator-fixed CurrencyType enum

packages/settings/src/currency-type.test.ts

@@ -0,0 +1,16 @@
+import { describe, it, expect } from "vitest";
+import { CurrencyType, currencyLabel } from "./currency-type.js";
+
+describe("CurrencyType", () => {
+  it("uses the emulator-fixed numeric values", () => {
+    expect(CurrencyType.Credits).toBe(-1);
+    expect(CurrencyType.Duckets).toBe(0);
+    expect(CurrencyType.Diamonds).toBe(5);
+    expect(CurrencyType.Points).toBe(101);
+  });
+
+  it("maps each type to a human label", () => {
+    expect(currencyLabel(CurrencyType.Credits)).toBe("Credits");
+    expect(currencyLabel(CurrencyType.Diamonds)).toBe("Diamonds");
+  });
+});

packages/settings/src/currency-type.ts

@@ -0,0 +1,18 @@
+// Numeric values are dictated by the game emulator and MUST NOT change.
+export enum CurrencyType {
+  Credits = -1,
+  Duckets = 0,
+  Diamonds = 5,
+  Points = 101,
+}
+
+const LABELS: Record<CurrencyType, string> = {
+  [CurrencyType.Credits]: "Credits",
+  [CurrencyType.Duckets]: "Duckets",
+  [CurrencyType.Diamonds]: "Diamonds",
+  [CurrencyType.Points]: "Points",
+};
+
+export function currencyLabel(type: CurrencyType): string {
+  return LABELS[type];
+}