function overloads

Author: danielschnetler

src/app.ts

@@ -21,13 +21,20 @@ type Numeric = number | boolean;
 
 type Universal = Combinable & Numeric;
 
+function add(a: number, b: number): number;
+function add(a: string, b: string): string;
+function add(a: number, b: string): string;
+function add(a: string, b: number): string;
 function add(a: Combinable, b: Combinable) {
   if (typeof a === "string" || typeof b === "string") {
     return a.toString() + b.toString();
   }
   return a + b;
 }
 
+const result = add("Dan", "the Man");
+result.split(" ");
+
 type UnkownEmployee = Employee | Admin;
 
 function printEmployeeInformation(emp: UnkownEmployee) {