/**
 * Which email providers this installation can configure.
 *
 * The admin cannot know what a plugin registered — it is compiled long before
 * any install chooses its plugins — so the set of provider types, and the
 * fields each one needs, has to come from the server that holds the registry.
 * Without this the definitions exist and nothing can reach them, which is the
 * state the provider contract was written to end.
 *
 * @example
 * ```typescript
 * // In your Next.js app: app/api/email-providers/types/route.ts
 * export { GET } from 'nextly/api/email-provider-types';
 * ```
 *
 * @module api/email-provider-types
 */
/**
 * List the registered provider types and the fields each one takes.
 *
 * Returns descriptors, never definitions: `parseConfig` and `createAdapter` are
 * server functions and no stored value is involved, so nothing here can leak a
 * credential. What it does reveal is which plugins an install runs, so it sits
 * behind the same permission as reading the providers themselves rather than
 * being public.
 */
declare const GET: (request: Request) => Promise<Response>;

export { GET };