Fix errors raised by lint upgrade

Author: jo-sm

src/Socket.spec.ts

@@ -155,7 +155,7 @@ describe("Socket", () => {
       eventHandlers.end();
 
       await wait();
-      expect(data).not.toBeUndefined();
+      expect(data).toBeDefined();
     });
 
     it("should resolve data when the socket close event is fired and the instance is of kind client", async () => {
@@ -181,7 +181,7 @@ describe("Socket", () => {
       eventHandlers.close();
 
       await wait();
-      expect(data).not.toBeUndefined();
+      expect(data).toBeDefined();
     });
 
     it("should reject if the data could not be properly decoded", async () => {

src/utils.spec.ts

@@ -25,7 +25,7 @@ describe("utils", () => {
 
   describe("encode", () => {
     it("should transform a JSON serializable object into a base64 string", () => {
-      expect(utils.encode({ hello: "world" })).toStrictEqual("eyJoZWxsbyI6IndvcmxkIn0=");
+      expect(utils.encode({ hello: "world" })).toBe("eyJoZWxsbyI6IndvcmxkIn0=");
     });
   });
 
@@ -60,7 +60,7 @@ describe("utils", () => {
 
       eventHandlers.end();
 
-      expect(await resultPromise).toStrictEqual("");
+      expect(await resultPromise).toBe("");
     });
 
     it("should return a concatenated string of non-null values read from stdin", async () => {
@@ -73,7 +73,7 @@ describe("utils", () => {
 
       eventHandlers.end();
 
-      expect(await resultPromise).toStrictEqual("hello2world");
+      expect(await resultPromise).toBe("hello2world");
     });
   });