import { CompositeLayer } from '@deck.gl/core';
import type { DefaultProps, UpdateParameters } from '@deck.gl/core';
type GeometryType = 'Point' | 'MultiPoint' | 'LineString' | 'MultiLineString' | string;
type FeatureGeometry = {
    type: GeometryType;
    coordinates: any;
};
type FeatureLike = {
    geometry: FeatureGeometry;
    properties?: Record<string, any>;
};
type LabelRow = {
    position: number[];
};
type StyleLayerLike = {
    layout?: Record<string, any>;
};
type LabelConfig = {
    labels?: boolean;
};
/**
 * Props accepted by {@link MVTLabelLayer}.
 */
export type MVTLabelLayerProps = {
    /** Decoded vector-tile features or a feature-collection-like object. */
    data?: {
        features?: FeatureLike[];
    } | FeatureLike[];
    /** Label rendering enablement for the current basemap mode. */
    config: LabelConfig;
    /** Style layer that contributes label rules. */
    styleLayer?: StyleLayerLike;
    /** Zoom level used to resolve stop-based style values. */
    zoom?: number;
    /** Text fill color. */
    textColor?: number[];
    /** Optional text halo/background color. */
    labelBackground?: number[] | null;
    /** Text size units forwarded to `TextLayer`. */
    labelSizeUnits?: 'pixels' | 'meters' | 'common';
    /** Font family used by `TextLayer`. */
    fontFamily?: string;
    /** Enables billboard rendering in the text sublayer. */
    billboard?: boolean;
    /** When `true`, renders the source geometries for debugging. */
    renderGeometry?: boolean;
    /** Additional extension instances passed through to the text sublayer. */
    extensions?: any[];
    /** Active basemap mode. */
    mode?: 'map' | 'globe';
};
type MVTLabelLayerState = {
    /** Flattened label rows generated from the current tile data. */
    labelData?: LabelRow[];
};
/**
 * Renders label text for decoded vector-tile features, with optional geometry
 * passthrough for debugging.
 */
export declare class MVTLabelLayer extends CompositeLayer<MVTLabelLayerProps> {
    /** Deck.gl layer name. */
    static layerName: string;
    /** Default props for {@link MVTLabelLayer}. */
    static defaultProps: DefaultProps<MVTLabelLayerProps>;
    /** Current label-row state. */
    state: MVTLabelLayerState;
    /**
     * Extracts the visible label text for a decoded feature.
     */
    getLabel(feature: FeatureLike): string | undefined;
    /**
     * Returns the font size for a decoded feature label.
     */
    getLabelSize(_feature: FeatureLike): number;
    /**
     * Returns the text color for a decoded feature label.
     */
    getLabelColor(_feature: FeatureLike): number[];
    /**
     * Extracts candidate label anchor positions from a feature geometry.
     */
    getLabelAnchors(feature: FeatureLike): number[][];
    /**
     * Recomputes label anchor rows when the source tile data changes.
     */
    updateState({ changeFlags }: UpdateParameters<this>): void;
    /**
     * Renders the optional debug geometry and the text labels.
     */
    renderLayers(): any;
}
export {};
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