sfdxorgviewer.txt

I want to make sfdx scratch org manager (view, create, delete). Since LWC is open source, i want to make this using 
open source LWC. and created app using following command:

npx lwc-create-app

Once the app is ready and running, i need to execute sfdx commands, in order to use that i want to do something as follows:
import {SfdxCommand} from '@salesforce/command';

But doing that throws error.