Thanks for contributing! The magic numbers are actually done this way on purpose so that TypeScript is not required in the generated JS file. For example...

// index.ts
import typescript = require('typescript')

var a = 1;

// index.js
var a = 1;

But if you reference an enum:

// index.ts
import typescript = require('typescript')

var a = typescript.ModuleKind.CommonJS;

// index.js
var typescript = require('typescript'); // this line is emitted but we don't want it

var a = 1;

Looks like this is being tracked in microsoft/TypeScript#4690

Oh I see. Seems like we're going to have to wait a few typescript release before merging this :)

Do you want me to leave it open so that when microsoft/TypeScript#4690 resolves we'll be able to merge it ? Or open a tracking issue ?

Thanks!

We can just leave it open.

Cool.

@ddrmanxbxfr Thanks for your contribution! But ts-loader has a total revamp recently. Would you mind re-submitting a pull request for this?

Following the change to the enum in 2.0 and @HerringtonDarkholme painful experience we've decided not to do this.