Ambient global namespace not found

[kuon]

I am trying to use the youtube definition file https://raw.githubusercontent.com/DefinitelyTyped/DefinitelyTyped/7de6c3dd94feaeb21f20054b9f30d5dabc5efabd/youtube/youtube.d.ts

This file is referenced from my app.ts file with /// <reference path="youtube.d.ts" />.

I can compile my app.ts file with tsc -m commonjs, but with brunch, I got:
Error 2503: Cannot find namespace 'YT'. (Line: 104, Col: 28)

If I copy the content of the youtube.d.ts file in my app.ts brunch can then compile it.

Any idea?

[baptistedonaux]

Hi @kuon,

Sorry the waiting. If you have always the problem, I can take few minutes to check that this issue is not thrown by brunch-typescript.

[CarsonF]

I'm having the same problem. But only with some of the uses which is weird.

[CarsonF]

Just ignoring the error seemed to work for me.

plugins: {
  brunchTypescript: {
    ignoreErrors: [
      2503 // Cannot find namespace {0}
    ]
  }
}

[colinbate]

Sorry, I should have chimed in earlier. This plugin runs TypeScript in a single file isolation mode. That means that it looks at each file without any outside context. It makes it faster, but it is also a lot less "intelligent". When we started surfacing errors, it was obvious that many of the errors were because of this mode. Finding outside namespaces is obviously one such error. We can add it to the list which are ignored by default which will help in this case.

I had started looking into an option to run the full typescript language server as part of compilation (perhaps when doing a regular build without watching). I didn't get very far with that.

If you are using this plugin, I recommend adding tsc --noEmit as part of your npm test script. That should catch any proper TS errors. Your editor may also be catching them, but it is nice to have something you can run in your CI tool.

[CarsonF]

Ah that's why tsc catches more errors than this does. Thanks for --noEmit hint.

[baptistedonaux]

@colinbate Can you improve brunch-typescript in any way ?

[kuon]

@baptistedonaux I think it would require using the typescript service.

When I was using browserify, I was using https://github.com/TypeStrong/tsify which uses the typescript services.