source maps aren't requests when running via pub serve

[DartBot]

<img src="https://avatars.githubusercontent.com/u/5479?v=3" align="left" width="96" height="96"hspace="10"> Issue by sethladd
Originally opened as dart-lang/sdk#16472

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I don't see a source map file being sent, when serving my app over pub serve.

See screenshot.

I was hoping to debug via source maps when using pub serve ?

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Attachment:
[Screen Shot 2014-01-31 at 4.23.31 PM.png](https://storage.googleapis.com/google-code-attachments/dart/issue-16472/comment-0/Screen Shot 2014-01-31 at 4.23.31 PM.png) (53.69 KB)

[DartBot]

<img src="https://avatars.githubusercontent.com/u/5479?v=3" align="left" width="48" height="48"hspace="10"> Comment by sethladd

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FWIW here's what it looks like when I just "run as javascript"

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Attachment:
[Screen Shot 2014-01-31 at 4.25.56 PM.png](https://storage.googleapis.com/google-code-attachments/dart/issue-16472/comment-1/Screen Shot 2014-01-31 at 4.25.56 PM.png) (82.82 KB)

[DartBot]

<img src="https://avatars.githubusercontent.com/u/5479?v=3" align="left" width="48" height="48"hspace="10"> Comment by sethladd

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(notice the talk_to_me.dart.js.map request)

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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"pub serve" just starts an HTTP server. The browser is responsible for whether or not it requests a given file.

Can you manually request the source map file?

[DartBot]

<img src="https://avatars.githubusercontent.com/u/5479?v=3" align="left" width="48" height="48"hspace="10"> Comment by sethladd

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Looks like pub serve isn't adding the trailing comments to the end of the app.dart.js file. The comments tell the dev tools about source maps.

Something like this:

//# sourceMappingURL=/path/to/file.js.map

To verify, run dart2js from the command line and check out its output.

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Attachment:
[Screen Shot 2014-01-31 at 5.04.55 PM.png](https://storage.googleapis.com/google-code-attachments/dart/issue-16472/comment-4/Screen Shot 2014-01-31 at 5.04.55 PM.png) (83.84 KB)

[DartBot]

<img src="https://avatars.githubusercontent.com/u/188?v=3" align="left" width="48" height="48"hspace="10"> Comment by nex3

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Added Duplicate label.
Marked as being merged into #765.