Cannot read property 'file' of undefined

[pgrm]

Getting the following exception, when I'm trying to bundle my precompiled d.ts files:

[19:33:57] TypeError: Cannot read property 'file' of undefined
    at C:\project\node_modules\dts-bundle\lib\index.js:489:42
    at Array.forEach (native)
    at Object.bundle (C:\project\node_modules\dts-bundle\lib\index.js:487:25)
    at Gulp.<anonymous> (C:\project\gulp\build.js:39:9)
    at module.exports (C:\project\node_modules\gulp\node_modules\orchestrator\lib\runTask.js:34:7)
    at Gulp.Orchestrator._runTask (C:\project\node_modules\gulp\node_modules\orchestrator\index.js:273:3)
    at Gulp.Orchestrator._runStep (C:\project\node_modules\gulp\node_modules\orchestrator\index.js:214:10)
    at C:\project\node_modules\gulp\node_modules\orchestrator\index.js:279:18
    at finish (C:\project\node_modules\gulp\node_modules\orchestrator\lib\runTask.js:21:8)
    at C:\project\node_modules\gulp\node_modules\orchestrator\lib\runTask.js:52:4

Not sure if this is relevant, but I've noticed that in map exports express is missing - here the map exports dts-bundle is reporting:

### map exports ###
- buffer -> C:\project\typings\node\node.d.ts
- querystring -> C:\project\typings\node\node.d.ts
- events -> C:\project\typings\node\node.d.ts
- http -> C:\project\typings\node\node.d.ts
- cluster -> C:\project\typings\node\node.d.ts
- zlib -> C:\project\typings\node\node.d.ts
- os -> C:\project\typings\node\node.d.ts
- https -> C:\project\typings\node\node.d.ts
- punycode -> C:\project\typings\node\node.d.ts
- repl -> C:\project\typings\node\node.d.ts
- readline -> C:\project\typings\node\node.d.ts
- vm -> C:\project\typings\node\node.d.ts
- child_process -> C:\project\typings\node\node.d.ts
- url -> C:\project\typings\node\node.d.ts
- dns -> C:\project\typings\node\node.d.ts
- net -> C:\project\typings\node\node.d.ts
- dgram -> C:\project\typings\node\node.d.ts
- fs -> C:\project\typings\node\node.d.ts
- path -> C:\project\typings\node\node.d.ts
- string_decoder -> C:\project\typings\node\node.d.ts
- tls -> C:\project\typings\node\node.d.ts
- crypto -> C:\project\typings\node\node.d.ts
- stream -> C:\project\typings\node\node.d.ts
- util -> C:\project\typings\node\node.d.ts
- assert -> C:\project\typings\node\node.d.ts
- tty -> C:\project\typings\node\node.d.ts
- domain -> C:\project\typings\node\node.d.ts
- mysql -> C:\project\typings\mysql\mysql.d.ts
- bluebird -> C:\project\typings\bluebird\bluebird.d.ts
- chai -> C:\project\typings\chai\chai.d.ts
- chai-http -> C:\project\typings\chai-http\chai-http.d.ts
- mocha -> C:\project\typings\mocha\mocha.d.ts
- morgan -> C:\project\typings\morgan\morgan.d.ts
- body-parser -> C:\project\typings\body-parser\body-parser.d.ts

but I'm using also express, can that be the problem? any more information I can provide you with which would help?

[pgrm]

I've added a simple console.log at the file in question and yes it's failing when express is used. But when compiling it, everything worked. I'm using tsd for all my usings so everything should be the same. Any clues?

[pgrm]

The problem was that the whole files seemed to have been commented out for dts-bundle - see #16 for more details

[rdingwall]

I had this error too, took a while to diagnose but discovered it was due to a missing /// <reference path="...d.ts" statement. Could possibly have some better error handling here.