many Duplicate Identifier errors on testing type script application

searching the whole morning for a solution...

I use typescript on (node, npm, bower and gulp). On gulp serve / gulp test I got hundreds of same error message:

src\app\main\common\dialogs\collections\collections.controller.ts(1,8): error TS2300: Duplicate identifier 'IDialogService'.
src\app\main\common\dialogs\createproject\createprojectdialog.controller.ts(1,8): error TS2300: Duplicate identifier 'ILogService'.
src\app\main\common\dialogs\datasheet\create\controller.ts(1,8): error TS2300: Duplicate identifier 'IDialogService'.
src\app\main\common\dialogs\decisor\controller.ts(1,8): error TS2300: Duplicate identifier 'IDialogService'.

my Compiler Options:

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es5",
    "sourceMap": true
  },
  "exclude": [
    "node_modules"
  ]
}

Anyone who can give me a hint... ?

regards n00n