Dynamic hostname and aot

I want to bind a dynamic class name on a component node with the syntax like this:

@Component({
  host: {
    [`[class.${classNames()}]`]: 'true', 
  },
  selector: '...',
  templateUrl: '...',
})

      

        
        
        
      

    

When I try to build with angular-cli in AOT mode I have this error:

Error in error. Expression not supported

How can I get it to work?

thank