import type { ClientOptions } from 'openapi-fetch';
import type { RequestOptions } from '../client/common.js';
/**
 * Portal Config
 */
export type Config = Pick<ClientOptions, 'baseUrl' | 'headers' | 'fetch' | 'Request' | 'requestInitExt'> & {
    portalToken: string;
};
/**
 * OpenMeter Portal Client
 * Access to the customer portal.
 */
export declare class OpenMeter {
    private client;
    constructor(config: Config);
    /**
     * Query usage data for a meter by slug for customer portal.
     * This endpoint is publicly exposable to consumers.
     * @param meterSlug - The slug of the meter
     * @param query - The query parameters
     * @param signal - An optional abort signal
     * @returns The meter data
     */
    query(meterSlug: string, query?: {
        /** @description Start date-time in RFC 3339 format. Inclusive. */
        from?: string | Date;
        /** @description End date-time in RFC 3339 format. Inclusive. */
        to?: string | Date;
        /** @description If not specified, a single usage aggregate will be returned for the entirety of the specified period for each subject and group. */
        windowSize?: 'MINUTE' | 'HOUR' | 'DAY';
        /** @description The value is the name of the time zone as defined in the IANA Time Zone Database (http://www.iana.org/time-zones). If not specified, the UTC timezone will be used. */
        windowTimeZone?: string;
        /** @description Simple filter for group bys with exact match. */
        filterGroupBy?: Record<string, string>;
        /** @description If not specified a single aggregate will be returned for each subject and time window. `subject` is a reserved group by value. */
        groupBy?: string[];
    }, options?: RequestOptions): Promise<{
        from?: Date;
        to?: Date;
        windowSize?: import("../client/schemas.js").components["schemas"]["WindowSize"];
        data: import("../client/schemas.js").components["schemas"]["MeterQueryRow"][];
    }>;
}