Interop with JS/TS classes

1

I can’t seem to find anything regarding interop with classes defined in a JS/TS library. Specifically, is it possible to use ReScript to extend a class defined in an external lib?

I’m asking because I’m attempting to use the AWS CDK, which defines everything via classes (ugh!), and in order to define a new stack, I have to extend the cdk.Stack class defined in the @aws-cdk/core library. For example, here is how I would start out defining my own stack in TS:

import * as cdk from '@aws-cdk/core';

export class MyStack extends cdk.Stack {
  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    // The code that defines your stack goes here
  }
}

Is it possible to translate this into ReScript somehow?

If this is a futile task, no worries. If so, I guess I’ll have to stick with TS for this particular effort. I was just wondering if there were any way for me to use ReScript here instead of TS, as I’m looking for some smallish tasks to help me learn ReScript.

2

Unfortunately it’s not possible to define/extend JS classes in idiomatic ReScript. However, it’s pretty easy to bind to an existing class. I would recommend defining them in JS or TS for now, and then writing some ReScript bindings to the class if you need it.

3 Likes
3

Thanks for suggestion!