import createClient from "openapi-fetch";
import type { Logger } from "./client-utils.js";
export declare const ANALYTICS: "analytics";
export type SERVICE_NAME = typeof ANALYTICS;
export type TokenFunction = (serviceName: SERVICE_NAME) => Promise<string> | string;
export type BaseClientParams = {
    baseUrl: string;
    getTokenFn?: TokenFunction;
    logger?: Logger;
};
export declare abstract class BaseClient<T extends object> {
    private readonly baseUrl?;
    private readonly initialized;
    private readonly tokenExpiryThresholdMs;
    protected token?: string;
    protected tokenExpiryCheckTime: number;
    private refreshLock;
    protected getTokenFn?: TokenFunction;
    protected serviceName: SERVICE_NAME | undefined;
    protected logger?: Logger;
    protected client: ReturnType<typeof createClient<T>>;
    constructor({ baseUrl, getTokenFn, logger }: BaseClientParams);
    deleteToken(): void;
    protected getToken(): Promise<string | undefined>;
    isInitialized(): boolean;
    hasValidToken(): boolean;
    protected checkToken(): void;
    private toMilliseconds;
    private isTokenExpired;
    private performRefreshToken;
    refreshToken(): Promise<string | undefined>;
}
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