Upgrade to typescript@latest

[deskoh]

Looking to use import types in TypeScript 2.9 for meteor testing using TypeScript.

[marvinside]

Had the same Issue today: the typescript here is outdated.

I'm using akanix42/meteor-vue-typescript which uses barbatus/typescript-compiler which uses this package.

As I am already working with Typescript 3 and my tsconfig.json includes es2019 lib, i get an error.

To fix this, i bumped TS Version Number to 3.9.2 and it worked without any problems.

@barbatus do you think this will just work? If so, you might want to do it yourself or I can create a pull request.

If this would create more problems, I'd go ahead and just fork this and include it by myself.