import { Pollutant } from '@shootismoke/convert';
import { LatLng } from '../../types';
import { OpenAQMeasurements } from './types';
/**
 * @see https://docs.openaq.org/#api-Latest
 */
export interface OpenAQOptions {
    /**
     * Show results after a certain date. This acts on the utc timestamp of each
     * measurement.
     */
    dateFrom?: Date;
    /**
     * Show results before a certain date. This acts on the utc timestamp of each measurement.
     */
    dateTo?: Date;
    /**
     * Include extra fields in the output in addition to default values.
     */
    includeFields?: string[];
    /**
     * Change the number of results returned, max is 10000.
     * @default 10
     */
    limit?: number;
    /**
     * Limit to certain one or more parameters.
     */
    parameter?: Pollutant[];
}
/**
 * Fetch the closest station to the user's current position
 *
 * @param gps - Latitude and longitude of the user's current position
 */
export declare function fetchByGps(gps: LatLng, options?: OpenAQOptions): Promise<OpenAQMeasurements>;
/**
 * Fetch data by station
 *
 * @param stationId - The station ID to search
 */
export declare function fetchByStation(stationId: string, options?: OpenAQOptions): Promise<OpenAQMeasurements>;