import type { GeoJSONFeature } from "./layers/geojson.js";
export type FeatureId = string | number;
export type FeatureSourceChangeKind = "add" | "update" | "remove" | "clear";
export interface FeatureSourceChange {
    kind: FeatureSourceChangeKind;
    ids: readonly FeatureId[];
    features: readonly GeoJSONFeature[];
    version: number;
}
export type FeatureSourceListener = (change: FeatureSourceChange) => void;
/** Minimal structural contract consumed by Orihon data-driven layers. */
export interface FeatureSourceLike {
    readonly size: number;
    readonly version: number;
    getFeatures(): readonly GeoJSONFeature[];
    subscribe(listener: FeatureSourceListener): () => void;
}
export declare function isFeatureSourceLike(value: unknown): value is FeatureSourceLike;
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