How to iterate on a schema's properties types

Question

I'm new to Node.js, and I wanted to know if there is a way to iterate over the fields of a structure and know their types.

For exemple:

schema {
    origin: String,
    originDate: Date,
    arrival: String,
    arrivalDate: Date,
    passagers: {
        adults: Number,
        children: Number
    }
}

For example:

I want to loop in the scheema and know what is the type of each field.

Expected response:

String
Date
String
Date
Object

and also know what that object has.

Answer 1

Answer here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys

The Object.keys() method returns an array of a given object's own property names, in the same order as we get with a normal loop.

Answer 2

The basic logic is to pass a object type to a Object.keys() function which will return the list with all the keys

const user = new User(); // create new object
const schemaKeys = Object.keys(user.toObject());
console.log("The keys are",schemaKeys)