import * as L from 'leaflet'; declare module 'leaflet' { interface BoxZoomOptions extends ControlOptions { title?: string; aspectRatio?: number; divClasses?: string; enableShiftDrag?: boolean; iconClasses?: string; keepOn?: boolean; } namespace Control { class BoxZoom extends L.Control { constructor(options?: BoxZoomOptions); public toggleState(): void; public setStateOn(): void; public setStateOff(): void; public handleMouseDown(event: MouseEvent): void; } function boxzoom(options?: BoxZoomOptions): Control.BoxZoom; } }