Hard to Debug Errors

[srchulo]

Because the code is optimized and put together, it's hard to debug locally when there are errors because it doesn't really say what file the issue is in. Is there an easier way to debug for errors?

"errorMessage": "Cannot read property 'identity' of undefined",
    "errorType": "TypeError",
    "stackTrace": [
        "TypeError: Cannot read property 'identity' of undefined",
        "    at /home/user/documents/github/myapp/myapi/services/myservice/_optimize/my-api-dev-getSites/src/sites.js:2:1563",

[tmaslen]

I've put in a PR for this issue. It enables source maps: #114

Please comment on my PR if you want this feature.