chapter 01: typescript introduction

Author: loiane

.eslintrc.json

@@ -20,6 +20,7 @@
   "rules": {
     "class-methods-use-this": 0,
     "no-plusplus": 0,
-    "arrow-parens": 0
+    "arrow-parens": 0,
+    "no-console": 0
   }
 }

examples/chapter01/typescript/hello-world.js

@@ -6,3 +6,25 @@ var language = 'JavaScript'; // string
 var favoriteLanguage;
 var langs = ['JavaScript', 'Ruby', 'Python'];
 favoriteLanguage = langs[0];
+function printName(person) {
+    console.log(person.name);
+}
+var john = { name: 'John', age: 21 };
+var mary = { name: 'Mary', age: 21, phone: '123-45678' };
+printName(john);
+printName(mary);
+var MyObject = /** @class */ (function () {
+    function MyObject() {
+    }
+    MyObject.prototype.compareTo = function (b) {
+        if (this.age === b.age) {
+            return 0;
+        }
+        return this.age > b.age ? 1 : -1;
+    };
+    return MyObject;
+}());
+function compareTwoObjects(a, b) {
+    console.log(a.compareTo(b));
+    console.log(b.compareTo(a));
+}

examples/chapter01/typescript/hello-world.ts

@@ -8,3 +8,39 @@ let language = 'JavaScript'; // string
 let favoriteLanguage: string;
 let langs = ['JavaScript', 'Ruby', 'Python'];
 favoriteLanguage = langs[0];
+
+interface Person {
+  name: string;
+  age: number;
+}
+
+function printName(person: Person) {
+  console.log(person.name);
+}
+
+const john = { name: 'John', age: 21 };
+const mary = { name: 'Mary', age: 21, phone: '123-45678' };
+printName(john);
+printName(mary);
+
+interface Comparable<T> {
+  compareTo(b: T): number;
+}
+
+class MyObject implements Comparable<MyObject> {
+  age: number;
+
+  compareTo(b: MyObject): number {
+    if (this.age === b.age) {
+      return 0;
+    }
+    return this.age > b.age ? 1 : -1;
+  }
+}
+
+function compareTwoObjects(a: MyObject, b: MyObject) {
+  console.log(a.compareTo(b));
+  console.log(b.compareTo(a));
+}
+
+