Cannot read property 'length' of undefined
TypeError: Cannot read property 'length' of undefined
    at createSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:15457:109)
    at parseSourceFileWorker (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:15389:26)
    at Object.parseSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:15338:26)
    at Object.createSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:15192:29)
    at VirtualFileStats.getSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@ngtools\webpack\src\compiler_host.js:66:35)
    at WebpackCompilerHost.getSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@ngtools\webpack\src\compiler_host.js:191:38)
    at findSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:67909:29)
    at processImportedModules (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:68056:25)
    at findSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:67937:17)
    at processSourceFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:67840:27)
    at processRootFile (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:67728:13)
    at C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:67018:60
    at Object.forEach (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:1449:30)
    at Object.createProgram (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\typescript\lib\typescript.js:67018:16)
    at AotPlugin._setupOptions (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@ngtools\webpack\src\plugin.js:143:28)
    at new AotPlugin (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@ngtools\webpack\src\plugin.js:30:14)
    at _createAotPlugin (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@angular\cli\models\webpack-configs\typescript.js:55:12)
    at Object.exports.getNonAotConfig (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@angular\cli\models\webpack-configs\typescript.js:72:19)
    at NgCliWebpackConfig.buildConfig (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@angular\cli\models\webpack-config.js:29:37)
    at Class.run (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@angular\cli\tasks\serve.js:71:98)
    at check_port_1.checkPort.then.port (C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\node_modules\@angular\cli\commands\serve.js:121:26)
    at process._tickCallback (internal/process/next_tick.js:109:7)

npm ERR! Windows_NT 10.0.15063
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
npm ERR! node v6.11.3
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! frontend@0.0.0 start: `ng serve`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the frontend@0.0.0 start script 'ng serve'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the frontend package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     ng serve
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs frontend
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls frontend
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     C:\Users\tykksmat\Desktop\Angular\frontend(something broke)\npm-debug.log