feat(auth): userSignedUpEvent contract

packages/auth/src/events/user-signed-up.event.test.ts

@@ -0,0 +1,49 @@
+// packages/auth/src/events/user-signed-up.event.test.ts
+import { describe, it, expect } from "vitest";
+import { userSignedUpEventSchema, userSignedUpEvent } from "@/events/user-signed-up.event";
+
+describe("userSignedUpEvent", () => {
+  it("has the correct wire name", () => {
+    expect(userSignedUpEvent.name).toBe("auth.user.signed-up");
+  });
+
+  it("accepts a valid payload", () => {
+    const payload = {
+      userId: "user_123",
+      email: "alice@example.com",
+      signedUpAt: "2026-05-08T12:00:00.000Z",
+    };
+    expect(() => userSignedUpEventSchema.parse(payload)).not.toThrow();
+  });
+
+  it("rejects invalid email", () => {
+    expect(() =>
+      userSignedUpEventSchema.parse({
+        userId: "u1",
+        email: "not-an-email",
+        signedUpAt: "2026-05-08T12:00:00.000Z",
+      }),
+    ).toThrow();
+  });
+
+  it("rejects invalid datetime", () => {
+    expect(() =>
+      userSignedUpEventSchema.parse({
+        userId: "u1",
+        email: "alice@example.com",
+        signedUpAt: "yesterday",
+      }),
+    ).toThrow();
+  });
+
+  it("rejects unknown fields (strict)", () => {
+    expect(() =>
+      userSignedUpEventSchema.parse({
+        userId: "u1",
+        email: "alice@example.com",
+        signedUpAt: "2026-05-08T12:00:00.000Z",
+        extraField: "no",
+      }),
+    ).toThrow();
+  });
+});

packages/auth/src/events/user-signed-up.event.ts

@@ -0,0 +1,18 @@
+// packages/auth/src/events/user-signed-up.event.ts
+import { z } from "zod";
+import { defineEvent } from "@repo/core-events";
+
+export const userSignedUpEventSchema = z
+  .object({
+    userId: z.string(),
+    email: z.string().email(),
+    signedUpAt: z.string().datetime(),
+  })
+  .strict();
+
+export type UserSignedUpEvent = z.infer<typeof userSignedUpEventSchema>;
+
+export const userSignedUpEvent = defineEvent(
+  "auth.user.signed-up",
+  userSignedUpEventSchema,
+);