• CLI: 5.2.0
• VSCode: v.2019.2.21.1

Steps to reproduce:

• tns create app1 --js
• tns test init
• Open app in VSCode, set breakpoint in tests/example.js file
• Run from Test on iOS or Android
• Resume the debugger until the breakpoint in test is hit. Observe lots of 'undefined' messages in the Call Stack. You receive Could not load source 'undefined': Could not retrieve content.. message