import * as React from 'react'; export class BsPrefixComponent extends React.Component {} // Need to use this instead of typeof Component to get proper type checking. export function getOverlayDirection(placement, isRTL) { let bsDirection = placement; if (placement === 'left') { bsDirection = isRTL ? 'end' : 'start'; } else if (placement === 'right') { bsDirection = isRTL ? 'start' : 'end'; } return bsDirection; }