Angular demo not working

I’m trying to run the Angular 2 Demo from Github:

I ran the npm commands with node 8.9.4. However I receive this error:

$ npm run start

angular-webix-quickstart@1.0.0 start C:\Programming\Webix\angular2-demo-master
tsc && concurrently “tsc -w” “lite-server”

node_modules/@types/webix/index.d.ts(3443,18): error TS2304: Cannot find name ‘object’.
npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! angular-webix-quickstart@1.0.0 start: tsc && concurrently "tsc -w" "lite-server"
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the angular-webix-quickstart@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\User1\AppData\Roaming
pm-cache\_logs\2018-02-18T00_39_37_398Z-debug.log

I have the same error.
How we can fix it?
thanks