Angular 2 gantt chart demo code compilation issue

Gantt
#1
  1. Downlaoded https://github.com/DHTMLX/angular2-gantt-demo the same
  2. Installed npm
  3. Compiled using ng serve
  4. getting the following error

ERROR in D:/Victor/POC/angular2-gantt-demo-master (1)/angular2-gantt-demo-master/src/app/components/gantt.component.ts (8,16): File
‘D:/Victor/POC/angular2-gantt-demo-master (1)/angular2-gantt-demo-master/node_modules/@types/dhtmlxgantt/index.d.ts’ is not a module.)
D:/Victor/POC/angular2-gantt-demo-master (1)/angular2-gantt-demo-master/src/app/components/gantt.component.ts (8,16): Cannot import
type declaration files. Consider importing ‘dhtmlxgantt’ instead of ‘@types/dhtmlxgantt’.)

Please help me to solve this issue

#2

Thank you for reporting about the issue, we confirmed it.
The type definitions of dhtmlx gantt appear to be not compatible with the typescript version 2.9+.
There are two possible workarounds:

  1. Downgrade typescript to 2.8.x
npm uninstall typescript

npm install typescript@2.8.4
  1. Specify the typescript version in package.json
"typescript": "2.8.4",

If you do not want to downgrade typescript for a single component, you can remove type definitions of dhtmlx gantt and declare gantt instance manually:

declare let gantt: any;

Although, you will lose the type info, that is the lesser of two issues.