Sharepoint Framework with custom npm package and testing

[Ketill Antoníus Ágústsson]

Background Info

I'm having trouble testing my solution once I've included a custom npm package (through VSTS). I've setup my tests by following Elio Struyf's demo and created a npm package following another demo I found on the subject. I then followed VSTS guide for setting up the package for distribution and seemingly everything works.

Trouble

Once I added the package and ran gulp test I got the following error from karma/PhantomJS: 

14 02 2018 11:55:19.868:DEBUG [phantomjs.launcher]: Error: Cannot find module "oz-date-utils"


14 02 2018 11:55:19.868:DEBUG [phantomjs.launcher]:   http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:43884 in webpackMissingModule
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:43884
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:20 in __webpack_require__
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:43819
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:20 in __webpack_require__
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:19121 in webpackContext
  :0 in forEach
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:19109
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:20 in __webpack_require__
  http://localhost:9876/base/temp/tests.js?d8f3aa9c7d469d8d14c04541e9480ad6098bbb15:63

PhantomJS 2.1.1 (Windows 8.0.0) ERROR
  Error: Cannot find module "oz-date-utils"
  at C:/Users/ketill/Vinna/frameWORK/ozGanttChartResourceManagement/temp/tests.js:43884
PhantomJS 2.1.1 (Windows 8.0.0) ERROR
  Error: Cannot find module "oz-date-utils"
  at C:/Users/ketill/Vinna/frameWORK/ozGanttChartResourceManagement/temp/tests.js:43884

Frankly I don't even know where to begin as I've never used Karma or Phantom before. I've tried going through the npm demo again and comparing my package to others and noticed no apparent discrepancy. 

All help greatly appreciated, I'll gladly provide sources for anything that might help but I decided not to overcrowd this original post :)

[#2]

Turns out it was quite basic, I had my main index.js file according to the npm package's package.json set wrong. That wasn't apparent because TypeScript picked up the original index.ts in the root. PhantomJS / Karma then didn't understand that file and couldn't find the correct index.js file.