lazy-loading property pattern for classes

lazy.js

class MyClass {
    constructor() {

        const instance = this;
        
        Object.defineProperty(this, "data", {
            get() {
                const actualData = "Something big...";
				
                console.log(this === instance); // true
                
                Object.defineProperty(instance, "data", {
                    value: actualData,
                    writable: false,
                    configurable: false
                });

                return actualData;
            },
            configurable: true,
            enumerable: true
        });

    }
}

const object = new MyClass();
console.log(object.hasOwnProperty("data"));     // true

const data = object.data;
console.log(object.hasOwnProperty("data"));     // true