import type { AccessToken } from "@azure/core-auth";
/** Type guard for a caller-supplied {@link AccessToken} (carries a valid explicit expiry). */
export declare const isAccessToken: (value: unknown) => value is AccessToken;
/**
 * Resolves a token into an {@link AccessToken}. Expiry is taken from a caller-supplied
 * `AccessToken` if present, otherwise from the JWT `exp` claim. A token that cannot be decoded
 * (e.g. an encrypted/opaque token) or that lacks a usable `exp` is accepted as-is with a fallback
 * expiry of `now + undecodableTokenExpiryIntervalInSeconds`; an empty/blank token throws.
 */
export declare const parseToken: (token: string | AccessToken, undecodableTokenExpiryIntervalInSeconds?: number) => AccessToken;
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