this.breakpointProvider=newutils.BreakpointProvider();window.matchMedia(`(min-width: ${this.breakpointProvider.breakpoints.large})`).addListener(()=>{// Code gets executed when the viewport is at least "large"});if(window.matchMedia(`(max-width: ${this.breakpointProvider.breakpoints.medium})`).matches){// Condition evaluates to true, if the viewport is at most "medium"}