import type { LayerSpecification as MapLibreLayerSpecification } from 'maplibre-gl';
import type { ColorRampName } from './colormap';
export type PreviewStyleLayer = {
    id: string;
    type: MapLibreLayerSpecification['type'] | 'custom';
    internal?: boolean;
};
export type Layer = {
    id: string;
    title: string;
    defaultOpacity: number;
    styleLayers: PreviewStyleLayer[];
    defaultColorRamp?: ColorRampName;
    colorRampRange?: readonly [min: number, max: number];
    backgroundRemovable?: boolean;
};
export type LayerState = {
    visible: boolean;
    opacity: number;
    colorRamp?: ColorRampName;
    removeBackground?: boolean;
};
export type LayerControl = {
    id: string;
    title: string;
    colorRampRange?: Layer['colorRampRange'];
} & LayerState;
export declare const resolveLayerState: (layer: Layer, states: ReadonlyMap<string, LayerState>) => LayerState;
export declare const isLayerDrawn: ({ visible, opacity }: LayerState) => boolean;
export declare const rampedLayers: (layers: readonly LayerControl[]) => LayerControl[];
export declare const toLayerControlItems: (layers: readonly Layer[], states: ReadonlyMap<string, LayerState>) => LayerControl[];
export declare const humanizeLayerName: (name: string) => string;