Function getInitialWidth

getInitialWidth(): number
Custom hook to track and respond to viewport breakpoint changes. Provides responsive design information based on window width.

Returns number
An object containing:
- isMobile: boolean (width < 768px)
- isTablet: boolean (768px <= width < 1024px)
- isDesktop: boolean (width >= 1024px)
- current: Breakpoint type ('mobile' | 'tablet' | 'desktop')
Example
```
// Basic usage
const { isMobile, current } = useBreakpoint();
if (isMobile) {
  // Render mobile component
}
```
Example
```
// Conditional rendering
const { current } = useBreakpoint();
return (
  <div>
    {current === 'mobile' ? <MobileView /> : <DesktopView />}
  </div>
);
```
See
- BreakpointResult for return type structure
- Breakpoint for available breakpoint values
- Defined in hooks/useBreakpoint.ts:33