adding monkeytype

backend/__tests__/vitest.d.ts

@@ -0,0 +1,32 @@
+import type { Assertion, AsymmetricMatchersContaining } from "vitest";
+import type { Test as SuperTest } from "supertest";
+import MonkeyError from "../src/utils/error";
+
+type ExpectedRateLimit = {
+  /** max calls */
+  max: number;
+  /** window in milliseconds. Needs to be within 2500ms */
+  windowMs: number;
+};
+interface RestRequestMatcher<R = Supertest> {
+  toBeRateLimited: (expected: ExpectedRateLimit) => RestRequestMatcher<R>;
+}
+interface ThrowMatcher {
+  toMatchMonkeyError: (expected: {
+    status: number;
+    message: string;
+  }) => MatcherResult;
+}
+
+declare module "vitest" {
+  interface Assertion<T = any> extends RestRequestMatcher<T>, ThrowMatcher {}
+  interface AsymmetricMatchersContaining
+    extends RestRequestMatcher, ThrowMatcher {}
+}
+
+interface MatcherResult {
+  pass: boolean;
+  message: () => string;
+  actual?: unknown;
+  expected?: unknown;
+}