Adding package via npm to the project causes Error: Duplicate Resource on tns run

Expected behavior

Project should successfully compile without any other modifications.

Actual behavior

tns will throw errors while compiling "Error: Duplicate Resource" and ultimately stop executing. This is due .js.map files being copied to platform and Android compiler doesn't differentiate between .js.map/.js.gz and .js files and treat them like they are equal.

How to reproduce

1. Create new NativeScript project
2. Add any package with .js.map files (Steem for example npm i --save steem)
3. Build app: tns run android
4. Watch for compile errors in console, right before Java throws compilation error there is merge assets error with Duplicate Resource message

Workaround:
After getting the error, go to platform/android and delete "duplicate" map/gz files from modules causing the issue.

• Browser:
  N/A
• Operating system:
  Windows 10 1709
• Development software:
  Node v8.9.4
  JRE 8
  NativeScript v3.4.1
  tns-core 3.4.0
  tns-android 3.4.1

Recording Of The Bug

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Posted on Utopian.io - Rewarding Open Source Contributors

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