extends vs implements in typescript

class Person {
  name: string;
  age: number;

  walk(): void {
    console.log('Walking (person Class)')
  }

  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  }
}
class child extends Person { }

// Man has to implements at least all the properties
// and methods of the Person class
class man implements Person {
  name: string;
  age: number

  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  }

  walk(): void {
    console.log('Walking (man class)')
  }

}

(new child('Mike', 12)).walk();
// logs: Walking(person Class)

(new man('Tom', 12)).walk();
// logs: Walking(man class)

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extends vs implements in typescript

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