Verify args in subscribe and publish

Author: canmingir

src/Event.js

@@ -31,6 +31,10 @@ function typeColor(type) {
 }
 
 const subscribe = (...args) => {
+  if (args.length < 2) {
+    throw new Error("subscribe requires at least 2 arguments");
+  }
+
   const callback = args.pop();
   const type = args.join(".");
   const id = uuid();
@@ -69,6 +73,10 @@ const subscribe = (...args) => {
 };
 
 const publish = (...args) => {
+  if (args.length < 2) {
+    throw new Error("publish requires at least 2 arguments");
+  }
+
   const payload = args.pop();
   const type = args.join(".");
 

src/test/event.test.js

@@ -1,6 +1,10 @@
 import { subscribe, publish, messages } from "../Event.js";
 
 describe("react-event", () => {
+  it("accepts type and payload", () => {
+    expect(() => publish("TEST_EVENT")).toThrow();
+  });
+
   it("subscribes and publishes events", (done) => {
     subscribe("TEST_EVENT", (result) => {
       expect(result).toMatchObject({ number: 10, string: "blue" });