in src/components/BreakpointContainer.tsx [72:80]
componentDidUpdate(prevProps: IProps, prevState: IState) {
// Check if bp changed to support 'onChange' callback
if (
typeof this.props.onChange === 'function' &&
this.state.currentBp !== prevState.currentBp
) {
this.props.onChange(this.state.currentBp, this.state.size);
}
}