setPrototypeOf < Object < JavaScript

The Object setPrototypeOf() static method sets the prototype of the specified object to another object or null.

    
    const object = {};

    const account = {
        amount: 100,
        customer: "Bill Smith"
    }

    console.log(object.amount);
    // undefined

    Object.setPrototypeOf(object, account);

    console.log(object.amount);
    // 100