/**
 * Auth57 SDK — minimal fetch-based client.
 *
 * Works in every modern runtime: Node 18+, Deno, Bun, Cloudflare Workers,
 * Vercel Edge, browsers. No dependencies.
 *
 * Usage:
 *   import { Auth57Client } from '@auth57/sdk';
 *   const client = new Auth57Client({ apiKey: process.env.AUTH57_API_KEY! });
 *   const result = await client.paLookup({
 *     state: 'CA', program: 'medicaid_ffs', service: 'advanced_imaging',
 *   });
 */
import { type CompareInput, type CompareResponse, type LookupOptionsResponse, type ManifestResponse, type PaLookupInput, type PaLookupResponse, type Program, type StateCode, type StateSummaryResponse, type StatesListResponse } from './types.js';
export interface Auth57ClientOptions {
    /**
     * API key — grab one at https://auth57labs.com/subscribe-api.
     * For demo/trial, use `fca35353-4528-4fa8-b45f-f47f541ac091`
     * (public demo key, 10 calls/24h per session).
     */
    apiKey: string;
    /** Defaults to https://api.auth57.io */
    baseUrl?: string;
    /**
     * Optional fetch implementation. Defaults to globalThis.fetch.
     * Override for custom timeout/retry/tracing middleware.
     */
    fetch?: typeof fetch;
    /**
     * Request timeout in ms. Default: 10_000 (10 seconds).
     */
    timeoutMs?: number;
}
export declare class Auth57Client {
    private readonly apiKey;
    private readonly baseUrl;
    private readonly fetchImpl;
    private readonly timeoutMs;
    constructor(options: Auth57ClientOptions);
    /**
     * Look up PA rule for a single state + program + (drug OR service).
     * Returns verdict, confidence, source URL, next steps.
     */
    paLookup(input: PaLookupInput): Promise<PaLookupResponse>;
    /**
     * Compare PA rules across up to 10 states. Returns per-state rows +
     * divergence summary (e.g., "3 of 5 states require PA. CA, WA are outliers.").
     * Requires compare_addon on your subscription.
     */
    compare(input: CompareInput): Promise<CompareResponse>;
    /**
     * Dataset capability descriptor: live verified rule counts, supported
     * states/programs/services/drugs, CMS deadlines, doc pointers. No auth
     * needed but the client sends the key anyway for usage tracking.
     */
    manifest(): Promise<ManifestResponse>;
    /**
     * List all 51 states with rule counts and policy flags
     * (non_expansion / ffs_dominant / wiser).
     */
    states(): Promise<StatesListResponse>;
    /**
     * Single-state summary with per-program PA breakdown, federal-protected
     * classes, and per-service / per-drug counts.
     */
    states(state: StateCode): Promise<StateSummaryResponse>;
    /**
     * For a given (state, program), return the drug classes and service
     * categories that actually have rules. Useful for filtering UI dropdowns
     * so users don't pick combinations with no data. No auth required.
     */
    lookupOptions(state: StateCode, program: Program): Promise<LookupOptionsResponse>;
    private request;
}
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