Interface implementation in Typescript

interface.ts

interface Package {
	person: {
		firstName?:string;
		lastName?:string;
		age:number;
		action: string;
	};

	status: {
		married?:bool;
		haschild?:bool;
	};
}

class Person implements Package {
	person : {firstName:string; lastName:string; age:number;};
	constructor(action:string, age:number) {
		this.person = {
			firstName: "Miklos",
			lastName: "janos",
			age: (age || 22),
			action: Person.getAction(action)
		}
	}

	log() {
		console.log(this.person);
	}

	static getAction(action) {
		return "Perform the following action: " + action;
	}
}

var person = new Person("running", 22);
person.log();