import { RefreshScheduler } from "./refresh-scheduler";
import { ApiTokenStore } from "./api-token-store";
import { ApiTokenInfo } from "../types/auth-token";
export declare const DEFAULT_DELAY_BUFFER_PERCENT = 0.95;
export interface ApiTokenManager {
    release(): void;
    getTokenInfo: () => Promise<ApiTokenInfo>;
}
/**
 * Create the standard [[ApiTokenManager]] interface that will manage all the lifecycle
 * of a token.
 *
 * @param fetchTokenInfo The async function that should be used to retrieve a fresh token.
 * @param onTokenRefresh The function to call when a token has been refreshed.
 * @param delayBuffer The percentage of time to use to schedule the next token refresh
 *                    (i.e. with a value of `0.9` and a token valid for 1000ms from now,
 *                    the next refresh would be scheduled to happen at `now + (0.9 * 1000)`)
 * @param apiTokenStore The API token store interface to retrieve token from and to save it back to.
 * @param refreshScheduler The scheduler interface that should be used to schedule upcoming refresh token
 *                         and check if a scheduled one already exist.
 *
 * @kind Factories
 */
export declare function createApiTokenManager(fetchTokenInfo: () => Promise<ApiTokenInfo>, onTokenRefresh: (apiToken: string) => void, delayBuffer: number, apiTokenStore: ApiTokenStore, refreshScheduler: RefreshScheduler): ApiTokenManager;
/**
 * Create the Noop [[ApiTokenManager]] interface that will manage all the lifecycle
 * of a token.
 *
 * @param token The hardwired token value
 *
 * @kind Factories
 */
export declare function createNoopApiTokenManager(token: string): ApiTokenManager;
/**
 * Check wheter the received [[ApiTokenInfo]] parameter is expired or near its
 * expiration.
 */
export declare function isApiTokenExpired(tokenInfo: ApiTokenInfo): boolean;