import type { components } from '../generated/openapi.js';
import type { RequestOptions } from '../types.js';
import { BaseResource } from './base.js';
export type LookupRequest = components['schemas']['LookupRequest'];
export type LookupResult = components['schemas']['Lookup'];
export declare class LookupResource extends BaseResource {
    /**
     * `POST /v1/lookup` — check whether a handle is reachable on iMessage.
     *
     * Two outcomes. The client returns the envelope's `data` and does not
     * surface the HTTP status, so branch on `pending` — the in-band signal:
     *
     * - **Terminal (`200`)** — `imessage: true | false | null`, and `pending`
     *   is absent. `null` means the iMessage status is unknown and the handle
     *   should be treated as SMS-safe (degrade to SMS instead of relying on
     *   iMessage delivery).
     * - **Pending (`202`)** — a device probe was dispatched but had not
     *   answered within the wait budget. `pending: true`, `imessage: null`,
     *   plus `probe_id` and `retry_after` (seconds).
     *
     * Completion is poll-only — there is no `lookup.completed` webhook.
     * Re-issue the same request after `retry_after`; the shared cache the
     * probe warms answers `200`.
     *
     * ```ts
     * const result = await client.lookup.check({ handle })
     * if (result.pending) {
     *   setTimeout(retry, (result.retry_after ?? 1) * 1000)
     * }
     * ```
     */
    check(params: LookupRequest, opts?: RequestOptions): Promise<LookupResult>;
}
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