TypeError: Cannot read property 'export=' of undefined from ./node_modules\typescript\lib\tsc.js

[georgeedwards]

TypeScript Version: 2.0.3

Code

When building any project I have started getting th following warning on my windows machine:

C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:37701
[0]                 throw e;
[0]                 ^
[0]
[0] TypeError: Cannot read property 'export=' of undefined
[0]     at checkExternalModuleExports (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26496:62)
[0]     at checkExportAssignment (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26474:13)
[0]     at checkSourceElement (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26642:28)
[0]     at Object.forEach (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:185:30)
[0]     at checkBlock (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:24881:16)
[0]     at checkSourceElement (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26589:28)
[0]     at checkFunctionExpressionOrObjectLiteralMethodDeferred (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:22975:21)
[0]     at checkDeferredNodes (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26666:25)
[0]     at checkSourceFileWorker (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26695:17)
[0]     at checkSourceFile (C:\Users\George\Source\Repos\docs\node_modules\typescript\lib\tsc.js:26680:13)
[0] tsc -w -p ./server exited with code 1

This doesn't seem to have anything to do with my project? Or if it does, the error message isn't helpful.

Expected behavior:
Clean compile, without throwing this error.

This seems to have occurred since I upgraded to node v6.7.0 however, on downgrade the problem remains. To replicate you can clone this repo. and then run npm i

[mhegazy]

@Andy-MS can you take a look at this one? we should take this for 2.0.5

[georgeedwards]

Thanks - would be great to sort. If you just ignore it, it doesn't actually seem to matter locally (compile completes file and with -w set, subsequent recompiles aren't affected) , but this is killing my Heroku builds.

FYI, server/routes/plugins.ts is missing }); at the end of router.post('/', function (req, res, next) {.

[georgeedwards]

@Andy-MS Thanks! That seems to have fixed the error? So what about that was causing such a weird error from tsc

@georgeedwards If you're really curious you could see the pull request linked above. We were accidentally skipping past the error and trying to fetch the exports of a non-module entity (assuming that the parent of an export = statement would be a module). Testing for all the possible malformed programs is hard!