Merge pull request mouredev#6451 from parababire/main

#29 - Javascript

Author: Roswell468

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

@@ -0,0 +1,169 @@
+// Incorrecto
+
+/* class Animal {
+  constructor(name) {
+    this.name = name
+    if (new.target === Animal) {
+      throw new Error('Animal es una interface y no puede ser instanciada')
+    }
+    if (!this.eat) {
+      throw new Error('Debe implimentar el método eat')
+    }
+    if (!this.fly) {
+      throw new Error('Debe implimentar el método fly')
+    }
+    if (!this.swim) {
+      throw new Error('Debe implimentar el método swim')
+    }
+  }
+}
+
+class Fish extends Animal {
+  eat() {
+    console.log(`${this.name} is eating`)
+  }
+  swim() {
+    console.log(`${this.name} is swimming`)
+  }
+  fly() {
+    console.error("ERROR! Fishes can't fly")
+  }
+}
+
+class Bird extends Animal {
+  eat() {
+    console.log(`${this.name} is eating`)
+  }
+  swim() {
+    console.error("ERROR! Birds can't swim");
+  }
+  fly() {
+    console.log(`${this.name} is flying`)
+  }
+}
+
+const bird = new Bird('Titi the Parrot');
+bird.swim(); // ERROR! Birds can't swim
+
+const fish = new Fish('Neo the Dolphin');
+fish.fly(); // ERROR! Fishes can't fly
+ */
+// Correcto
+
+class Swimmer {
+  constructor(name) {
+    this.name = name
+    if (new.target === Swimmer) {
+      throw new Error('Swimmer es una interface y no puede ser instanciada')
+    }
+    if (!this.swim) {
+      throw new Error('Debe implimentar el método swim')
+    }
+  }
+}
+
+class Flyer {
+  constructor(name) {
+    this.name = name
+    if (new.target === Flyer) {
+      throw new Error('Flyer es una interface y no puede ser instanciada')
+    }
+    if (!this.fly) {
+      throw new Error('Debe implimentar el método eat')
+    }
+  }
+}
+
+// Implement interfaces for specific types of animals
+
+class Bird extends Flyer {
+  constructor(name) {
+    super(name);
+  }
+  fly() {
+    console.log(`${this.name} is flying`);
+  }
+  eat() {
+    console.log(`${this.name} is eating`);
+  }
+}
+
+class Fish extends Swimmer {
+  constructor(name) {
+    super(name);
+  }
+  swim() {
+    console.log(`${this.name} is swimming`);
+  }
+  eat() {
+    console.log(`${this.name} is eating`);
+  }
+}
+
+// Usage
+
+const bird = new Bird('Titi the Parrot');
+bird.fly(); // Titi the Parrot is flying
+bird.eat(); // Titi the Parrot is eating
+
+console.log('\n');
+
+const fish = new Fish('Neo the Dolphin');
+fish.swim(); // Neo the Dolphin is swimming
+fish.eat(); // Neo the Dolphin is eating
+
+// Extra
+
+class Printer {
+  constructor() {
+    if (new.target === Printer) {
+      throw new Error("Printer es una interface no puedes instanciarla.")
+    }
+    if (!this.print) {
+      throw new Error("Debes implementar el método print")
+    }
+  }
+}
+
+class BlackAndWhitePrinter extends Printer {
+  print() {
+    console.log("Se imprime en blanco y negro.")
+  }
+}
+
+class ColorPrinter extends Printer {
+  print() {
+    console.log("Se imprime a color.")
+  }
+}
+
+const sendingFax = {
+  sendFax() {
+    console.log("Enviando fax.")
+  }
+}
+
+const scanner = {
+  scanning() {
+    console.log("Escaneando documento.")
+  }
+}
+
+Object.assign(ColorPrinter.prototype, sendingFax)
+Object.assign(ColorPrinter.prototype, scanner)
+
+const multifuncional = new ColorPrinter()
+multifuncional.print()
+multifuncional.sendFax()
+multifuncional.scanning()
+
+function testInterface(object, interface) {
+  const prototypeProperties = Object.getOwnPropertyNames(interface.prototype)
+
+  for (const method of prototypeProperties) {
+    if (!object[method] || typeof object[method] !== 'function') {
+      throw new Error(`La clase no implementa el método ${method} de la interface.`)
+  }
+  }
+}
+testInterface(multifuncional, Printer)