using constants in angular 2

app.const.ts

'use strict';

export const dist = '../path/to/dist/';
export const version: string = '0.0.1';

app.service.ts

import * as AppConst from '../app.const'; 

@Injectable()
export class AppService {

    constructor (
    ) {
        console.log('dist path', AppConst.dist );
    }

}