/**
 * Internal format for readings.
 */
export type Reading = [
    timestamp: number,
    value: number
];
/**
 * Internal format for readings.
 */
export interface ReadingOptions {
    since?: Date;
}
/**
 * Data transfer object for readings provided by the API.
 */
export interface ReadingDTO {
    '@id': string;
    dateTime: string;
    measure: string;
    value?: unknown;
}
export declare const filterSince: (data: Reading[], since: number) => Reading[];
/**
 * Get the readings for a measure.
 *
 * @todo Caching and throttling.
 *
 * @param id The EA measure id.
 * @returns A promise for an array of readings for the measure.
 */
export declare const getMeasureReadings: (id: string, options?: ReadingOptions) => Promise<Reading[]>;
export declare const mergeReadings: (first: Reading[], second: Reading[]) => void;
export declare const parseReadings: (items: ReadingDTO[]) => Record<string, Reading[]>;