import type { AggregatedConditions, AirQualityData, AggregatorOptions, Coordinates, RiskAssessment, SourceResult } from '../types/index.js';
export type RiskLayer = keyof NonNullable<RiskAssessment['layerScores']>;
type DirectKeys = Exclude<keyof AggregatedConditions, 'location' | 'timestampUtc' | 'sourcesQueried' | 'sourcesFailed' | 'confidence' | 'risk' | 'airQuality'>;
export type RiskHook<T> = {
    layer: RiskLayer;
    weight: number;
    score: (data: T) => number;
    factorLabel?: string;
};
export type DirectSource<K extends DirectKeys = DirectKeys> = {
    kind: 'direct';
    id: string;
    key: K;
    fetch: (coords: Coordinates, opts: AggregatorOptions) => Promise<SourceResult<NonNullable<AggregatedConditions[K]>>>;
    freshnessMinutes: number;
    /** Whether this source has meaningful coverage at the given location. */
    appliesTo: (coords: Coordinates) => boolean;
    risk?: RiskHook<NonNullable<AggregatedConditions[K]>>;
    apply: (c: Partial<AggregatedConditions>, r: SourceResult<NonNullable<AggregatedConditions[K]>>) => void;
};
export type MergedSource = {
    kind: 'merged';
    id: string;
    group: 'airQuality';
    fetch: (coords: Coordinates, opts: AggregatorOptions) => Promise<SourceResult<AirQualityData>>;
    freshnessMinutes: number;
    /** Whether this source has meaningful coverage at the given location. */
    appliesTo: (coords: Coordinates) => boolean;
};
type AnyDirectSource = {
    [K in DirectKeys]: DirectSource<K>;
}[DirectKeys];
export type SourceDefinition = AnyDirectSource | MergedSource;
export declare const SOURCES: readonly SourceDefinition[];
export declare const MERGED_RISK: {
    airQuality: RiskHook<AirQualityData>;
};
export {};