Etoit/strict ts channels

code/lib/channels/src/index.test.ts

@@ -44,7 +44,7 @@ describe('Channel', () => {
       const eventName = 'event1';
 
       channel.addListener(eventName, jest.fn());
-      expect(channel.listeners(eventName).length).toBe(1);
+      expect(channel.listeners(eventName)?.length).toBe(1);
     });
   });
 
@@ -53,7 +53,7 @@ describe('Channel', () => {
       const eventName = 'event1';
 
       channel.on(eventName, jest.fn());
-      expect(channel.listeners(eventName).length).toBe(1);
+      expect(channel.listeners(eventName)?.length).toBe(1);
     });
   });
 
@@ -63,17 +63,17 @@ describe('Channel', () => {
       const fn = jest.fn();
 
       channel.on(eventName, fn);
-      expect(channel.listeners(eventName).length).toBe(1);
+      expect(channel.listeners(eventName)?.length).toBe(1);
       channel.off(eventName, fn);
-      expect(channel.listeners(eventName).length).toBe(0);
+      expect(channel.listeners(eventName)?.length).toBe(0);
     });
   });
 
   describe('method:emit', () => {
     it('should execute the callback fn of a listener', () => {
       const eventName = 'event1';
       const listenerInputData = ['string1', 'string2', 'string3'];
-      let listenerOutputData: string[] = null;
+      let listenerOutputData: string[] | null = null;
       const mockListener: Listener = (data) => {
         listenerOutputData = data;
       };
@@ -86,7 +86,7 @@ describe('Channel', () => {
     it('should be callable with a spread operator as event arguments', () => {
       const eventName = 'event1';
       const listenerInputData = ['string1', 'string2', 'string3'];
-      let listenerOutputData: string[] = null;
+      let listenerOutputData: string[] | null = null;
 
       channel.addListener(eventName, (...data) => {
         listenerOutputData = data;
@@ -211,7 +211,7 @@ describe('Channel', () => {
       const listenerToBeRemoved = jest.fn();
       const listeners = [jest.fn(), jest.fn()];
       const findListener = (listener: Listener) =>
-        channel.listeners(eventName).find((_listener) => _listener === listener);
+        channel.listeners(eventName)?.find((_listener) => _listener === listener);
 
       listeners.forEach((fn) => channel.addListener(eventName, fn));
       channel.addListener(eventName, listenerToBeRemoved);

code/lib/channels/tsconfig.json

@@ -2,6 +2,6 @@
   "extends": "../../tsconfig.json",
   "include": ["src/**/*"],
   "compilerOptions": {
-    "strict": false
+    "strict": true
   }
 }