grunt install doesn't work

[gwelter90]

hi,

when i try to use
$ grunt install
than i got this error

the lines are:

240 isEmpty(object: any): boolean;
241 invoke(methodName: string, arguments?: any[]): any;
242 last(): TModel;

[maxolasersquad]

This looks to be based on a change in how TypeScript works since this was written. As the error indicates, the method named invoke on class Collection in src/declarations/backbone/backbone.d.ts on line 241 has an argument named arguments which is no longer allowed. Someone will need to update this class, and probably everything that subclasses it. I would love to take this task on but I'm not sure when I will have the time.