React & Typescript: Constant enums and namespaces are not supported

Question

We've got a React app that's using create-react-app-typescript to add Typescript support within our solution and this has been working fairly well.

However, now that Typescript is supported natively by Create React App, I'm attempting to migrate the project and did so semi-successfully by following the blog post as recommended in the Create React App docs.

I'm getting several Typscript errors on build, which I'm working through currently, but there's a couple that I'm not sure how to best resolve.

The docs state the following note in regards to support for constant enums and namespaces...

Does anyone have any migration suggestions when it comes to constant enums and namespaces i.e. any preferred alternatives?

Any advice much appreciated!

basarat · Accepted Answer · 2019-03-13 13:58:36Z

-4

Does anyone have any migration suggestions when it comes to constant enums and namespaces i.e. any preferred alternatives?

Constant Enums

Delete the const keyword.

Old:

const enum ___

New:

enum ___

Namespaces

They are just the revealing module pattern. Transfer to raw JavaScript.

Old:

namespace X {
  __
}

New:

const X = (function(){
  ___

  return {___}
})()

answered Mar 13, 2019 at 13:58

basarat

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