declare function latLngDecimalToDegrees(decimal: number): string;
declare function latLngDegreesToDecimal(degreesStr: string): number;
declare function isObject(arg: any): boolean;
declare function isUndefined(arg: any): boolean;
declare function isString(arg: any): boolean;
declare function hasLine(obj: any): boolean;
declare function isSafeString(arg: any): boolean;
declare function hasPoint(obj: any): boolean;