message: Turn off declarationMap during webpack build
  Turning off just the declaration causes an error in ts-loader, as declarationMap is still true
diff: @@ -23,7 +23,8 @@ module.exports = {
  loader: 'ts-loader',
  options: {
  compilerOptions: {
  - declaration: false
  + declaration: false,
  + declarationMap: false
  }
  }
  }
  