import { type StyleSpecification } from '@maplibre/maplibre-gl-style-spec';
import type { SupportedFormat } from '../render/index.js';
declare function isValidStylejson(stylejson: any): stylejson is StyleSpecification;
declare function isSupportedFormat(ext: string | undefined): ext is SupportedFormat;
export { isValidStylejson, isSupportedFormat };