DefinitelyTyped/types/ol/OverlayPositioning.d.ts

declare enum OverlayPositioning {
    BOTTOM_LEFT = 'bottom-left',
    BOTTOM_CENTER = 'bottom-center',
    BOTTOM_RIGHT = 'bottom-right',
    CENTER_LEFT = 'center-left',
    CENTER_CENTER = 'center-center',
    CENTER_RIGHT = 'center-right',
    TOP_LEFT = 'top-left',
    TOP_CENTER = 'top-center',
    TOP_RIGHT = 'top-right',
}

export default OverlayPositioning;