#29 - Javascript

Author: parababire

Roadmap/29 - SOLID ISP/javascript/parababire.js

@@ -110,4 +110,54 @@ console.log('\n');
 
 const fish = new Fish('Neo the Dolphin');
 fish.swim(); // Neo the Dolphin is swimming
-fish.eat(); // Neo the Dolphin is eating
+fish.eat(); // Neo the Dolphin is eating
+
+// Extra
+
+class BlackAndWhitePrint {
+  constructor() {
+    if (new.target === BlackAndWhitePrint) {
+      throw new Error("BlackAndWhitePrint es una interface no puedes instanciarla.")
+    }
+    if (!this.print) {
+      throw new Error("Debes implementar el método print")
+    }
+  }
+}
+class ColorPrint {
+  constructor() {
+    if (new.target === ColorPrint) {
+      throw new Error("ColorPrint es una interface no puedes instanciarla.")
+    }
+    if (!this.print) {
+      throw new Error("Debes implementar el método print")
+    }
+  }
+}
+const sendingFax = {
+  sendFax() {
+    console.log("Enviando fax.")
+  }
+}
+const scanner = {
+  scanning() {
+    console.log("Escaneando documento.")
+  }
+}
+class BlackAndWhitePrinter extends BlackAndWhitePrint {
+  print() {
+    console.log("Hace solo impresiones en blanco y negro.")
+  }
+}
+class ColorPrinter extends ColorPrint {
+  print() {
+    console.log("Hace impresiones a color.")
+  }
+}
+Object.assign(ColorPrinter.prototype, sendingFax)
+Object.assign(ColorPrinter.prototype, scanner)
+
+const multifuncional = new ColorPrinter()
+multifuncional.print()
+multifuncional.sendFax()
+multifuncional.scanning()