Typescript Property Decorator factory test

ts-property-decorator.ts

function format(name: string)
{
    return function(target: Object, propertyKey: string | symbol) {
        console.log('name:', name, 'factory args', arguments);
    };
}

class Greeter {

    @format('test')
    greeting: string;

    constructor(message: string) {
        this.greeting = message;
    }
    greet() {
    }
}

const greet = new Greeter('test');
greet.greet();