export type ProxyLookupType = "domain" | "routing" | "access";
export interface ProjectLookupEnvironment {
    id: string;
    name: string;
    domains?: string[];
    active_release_id?: string | null;
    protected?: boolean;
}
export interface ProjectRoutingLookupResult {
    id: string;
    slug: string;
    environments: ProjectLookupEnvironment[];
}
export interface ProjectAccessLookupResult {
    id: string;
    slug: string;
    users?: Array<{
        id: string;
    }>;
    environments: ProjectLookupEnvironment[];
}
export interface DomainLookupResult extends ProjectRoutingLookupResult {
    users?: Array<{
        id: string;
    }>;
}
interface ProjectMetadataLogger {
    debug(message: string, extra?: Record<string, unknown>): void;
}
export interface ProjectMetadataClientOptions {
    apiBaseUrl: string;
    fetchImpl?: typeof fetch;
    logger?: ProjectMetadataLogger;
    timeoutMs?: number;
    maxInflight?: number;
}
export interface ProjectMetadataLookupOptions {
    signal?: AbortSignal;
}
export interface ProjectMetadataClient {
    lookupDomain(lookupKey: string, token: string, options?: ProjectMetadataLookupOptions): Promise<DomainLookupResult | null>;
    lookupRouting(lookupKey: string, token: string, options?: ProjectMetadataLookupOptions): Promise<ProjectRoutingLookupResult | null>;
    lookupAccess(lookupKey: string, token: string, includeUsers: boolean, options?: ProjectMetadataLookupOptions): Promise<ProjectAccessLookupResult | null>;
}
export declare class ProxyLookupAuthError extends Error {
    readonly lookupType: ProxyLookupType;
    readonly status: 401 | 403;
    constructor(lookupType: ProxyLookupType, status: 401 | 403);
}
export interface ProxyLookupFailureUpstreamContext {
    /** HTTP status returned by the metadata API for the failed lookup. */
    upstreamStatus?: number;
}
export declare class ProxyLookupFailure extends Error {
    readonly lookupType: ProxyLookupType;
    readonly publicStatus: 502 | 503 | 504;
    readonly upstreamStatus?: number;
    constructor(lookupType: ProxyLookupType, publicStatus: 502 | 503 | 504, message: string, options?: ErrorOptions & ProxyLookupFailureUpstreamContext);
}
export declare function normalizeProjectLookupKey(value: string): string;
export declare function createProjectMetadataClient(options: ProjectMetadataClientOptions): ProjectMetadataClient;
export declare const PROJECT_METADATA_RESPONSE_LIMIT_BYTES: number;
export {};
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