Create 2704-to-be-or-not-to-be.ts

Author: zetaraku

code/easy/2704-to-be-or-not-to-be.ts

@@ -0,0 +1,27 @@
+// Title: To Be Or Not To Be
+// Description:
+//     Write a function expect that helps developers test their code. It should take in any value val and return an object with the following two functions.
+//         toBe(val) accepts another value and returns true if the two values === each other. If they are not equal, it should throw an error "Not Equal".
+//         notToBe(val) accepts another value and returns true if the two values !== each other. If they are equal, it should throw an error "Equal"
+// Link: https://leetcode.com/problems/to-be-or-not-to-be/
+
+type ToBeOrNotToBe = {
+  toBe: (val: any) => boolean;
+  notToBe: (val: any) => boolean;
+};
+
+function raise(err: unknown): never {
+  throw err;
+}
+
+function expect(value: any): ToBeOrNotToBe {
+  return {
+    toBe: (val) => value === val || raise("Not Equal"),
+    notToBe: (val) => value !== val || raise("Equal"),
+  };
+}
+
+/**
+ * expect(5).toBe(5); // true
+ * expect(5).notToBe(5); // throws "Equal"
+ */