rarmatei · February 22, 2018 22:03
diff --git a/typeguards.ts b/typeguards.ts
 class Book {
  title: string;
 }

 class Television {
  screenSize: string;
 }

 function relaxWith(item: Book | Television) {
  if(item instanceof Book) {
    console.log(item.title);
  } else {
    console.log(item.screenSize);
  }
 }
	class Book {
	title: string;
	}

	class Television {
	screenSize: string;
	}

	function relaxWith(item: Book \| Television) {
	if(item instanceof Book) {
	console.log(item.title);
	} else {
	console.log(item.screenSize);
	}
	}