import { Result } from "@adviser/cement";
import type { SuperThis } from "../types/sthis.js";
import type { FPApiToken, VerifiedClaimsResult } from "../types/wire.js";
import { ClerkApiToken } from "./clerk-token.js";
export declare const USERINFO_TIMEOUT_MS = 2000;
export declare const WALK_TIMEOUT_FACTOR = 2;
export declare const WALK_TIMEOUT_MS: number;
export declare const NEGATIVE_CACHE_TTL_MS = 60000;
export declare const NEGATIVE_CACHE_MAX = 512;
export declare const INSTANCE_AFFINITY_TTL_MS = 600000;
export declare const INSTANCE_AFFINITY_MAX = 512;
export interface ClerkOauthFallbackOptions {
    readonly clockTolerance?: number;
    readonly userinfoUrl?: string;
    readonly fetch?: typeof fetch;
    readonly userinfoTimeoutMs?: number;
    readonly walkTimeoutMs?: number;
    readonly now?: () => number;
}
export declare class BoundedTokenMemo<V> {
    readonly ttlMs: number;
    readonly max: number;
    readonly now: () => number;
    readonly entries: Map<string, {
        readonly at: number;
        readonly value: V;
    }>;
    constructor(opts: {
        readonly ttlMs: number;
        readonly max: number;
        readonly now: () => number;
    });
    get size(): number;
    recall(key: string): V | undefined;
    has(key: string): boolean;
    forget(key: string): void;
    remember(key: string, value: V): void;
}
export declare class ClerkOauthFallbackToken implements FPApiToken {
    readonly sthis: SuperThis;
    readonly jwt: ClerkApiToken;
    readonly clockTolerance?: number;
    readonly explicitUserinfoUrl?: string;
    readonly fetchImpl: typeof fetch;
    readonly userinfoTimeoutMs: number;
    readonly walkTimeoutMs: number;
    readonly now: () => number;
    readonly negativeCache: BoundedTokenMemo<string>;
    readonly instanceAffinity: BoundedTokenMemo<string>;
    constructor(sthis: SuperThis, opts?: ClerkOauthFallbackOptions);
    readonly userinfoUrls: () => Result<string[], Error>;
    verify(token: string): Promise<Result<VerifiedClaimsResult>>;
    decode(token: string): Promise<Result<VerifiedClaimsResult>>;
    private rememberRejection;
    private introspectionOrder;
    private introspect;
    private onVerdict;
    private introspectAt;
    private claimsFrom;
}