ngc's flatModuleOutFile does not emit metadata on windows

[filipesilva]

I'm submitting a ... (check one with "x")

[x] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

Compiling using ngc and with flatModuleOutFile does not produce a *.metadata.json file on Windows.

Expected behavior

*.metadata.json file should be produced on all platforms.

Minimal reproduction of the problem with instructions

git clone https://github.com/filipesilva/ngc-flatmodule-windows
cd ngc-flatmodule-windows
npm run build

On a OSX machine, there will be a out-tsc/index.metadata.json. On Windows, this file will not be present.

What is the motivation / use case for changing the behavior?

ngc should work on Windows.

Please tell us about your environment:

Windows 10, VS Code, npm@4.0.5, node@7.4.0, typescript@2.2.1

• Angular version: 4.0.0-rc.3

• Browser: [ N/A ]

• Language: [ TypeScript 2.2 ]

• Node (for AoT issues): node --version = 7.4.0

[chuckjaz]

I reproduced the error and have a fix PR out to fix the Windows issue.

I also sent a PR for changes I would recommend to your library setup. The attached repository doesn't quite work as you are obscuring the index.ts in the source.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}