import type { ProviderQuotaFetch } from "../types.js";
export declare const CROSSREF_WORKS_URL = "https://api.crossref.org/works";
/** Injectable transport dependencies (fetch, timers, env). */
export interface CrossrefTransportDeps {
    readonly fetch?: ProviderQuotaFetch;
    readonly setTimeout?: typeof setTimeout;
    readonly clearTimeout?: typeof clearTimeout;
    readonly env?: NodeJS.ProcessEnv;
}
/** `CROSSREF_TIMEOUT` override, clamped through the shared seam (#234). */
export declare function resolveTimeoutMs(env: NodeJS.ProcessEnv): number;
export declare function fetchCrossrefJson(params: Record<string, string>, deps?: CrossrefTransportDeps, signal?: AbortSignal, path?: string): Promise<unknown>;
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