export type ReferenceGeography = "world-110m" | "world-50m" | "land-110m" | "land-50m";
/**
 * Resolve a string reference to GeoJSON features.
 * Uses dynamic import so bundlers can tree-shake/code-split the data.
 */
export declare function resolveReferenceGeography(name: ReferenceGeography): Promise<GeoJSON.Feature[]>;
/**
 * Check whether a value is a known reference geography string.
 */
export declare function isReferenceGeography(value: unknown): value is ReferenceGeography;
