import Cdn from '../Loaders/Cdn';
/** Keeps CDN credentials separate while preserving other query values verbatim. */
export default class CdnTokenRegistry {
    private _authParamNames;
    private _learnedCredentialByHost;
    private _decisionTokenByHost;
    private _decisionCdns;
    private _retainedHosts;
    /** Keeps these hosts' credentials when a later decision no longer lists them (see `_retainedHosts`). */
    retainHosts(hosts: string[]): void;
    /** The credential last known for `host`: the one it issued itself, else its decision token. */
    credentialForHost(host: string): string;
    learnFromDecision(cdnList: Map<string, Cdn>): void;
    learnFromRedirect(requestUrl?: string, responseUrl?: string): void;
    credentialFor(cdn: Cdn): string;
    hasCredentialFor(cdn: Cdn): boolean;
    stripAuthParams(query?: string): string;
    /**
     * For a request where we apply no credential: keeps a credential param only when the request goes to
     * the host that credential was issued for, other params untouched and in order. The issuer is the
     * CDN host that minted it when this registry knows it (a decision token, a redirect-learned token);
     * any other credential came with the player's URL, so it belongs to that URL's host, `sourceHost`.
     * Android `CdnTokenRegistry.isolateCredentials` parity.
     */
    isolateCredentials(query: string | undefined, sourceHost: string, targetHost: string): string;
    /** Whether the query carries any param known to be a CDN credential. */
    hasKnownCredential(query?: string): boolean;
    /** The hosts this registry saw issue exactly this `name=value` credential. */
    private _issuersOf;
    getAuthParamNames(): string[];
    private _pairsIn;
    private _nameOf;
}