Multiple classes in a module ok?

[espruino-discuss2]

Posted at 2023-02-13 by MarcEvan

Can you specify multiple classes in a module? If so, how do
you reference them individually after a requires() invocation?

--- modules/animals.js ---

class Animal { }
class Dog extends Animal { }
class Cat extends Animal { }

exports = Dog, Cat;

---

var animals = require("animals");

var d = new Dog();
var c = new Cat();

Uncaught ReferenceError: "Dog" is not defined
at line 2 col 5
var d=new Dog();

Uncaught ReferenceError: "Cat" is not defined
at line 3 col 5
var c=new Cat();

[espruino-discuss2]

Posted at 2023-02-13 by @thyttan

Hi!

You can look to the existing modules for examples.

Particularly widget_utils maybe, then you can also look at it's corresponding tutorial.

[espruino-discuss2]

Posted at 2023-02-13 by MarcEvan

Thanks!

I actually just found the answer. You have to export your classes with names assigned:

module.exports = {Dog: Dog, Cat: Cat};

and then do this in your referencing code:

var Dog = require("animals").Dog;
var Cat = require("animals").Cat;

var c = new Cat();