import { type CompiledChannel } from "#channel/compiled-channel.js";
/**
 * Normalizes one authored channel definition into the canonical internal
 * shape consumed by the compiler.
 *
 * Authored channels must go through {@link defineChannel} (or a wrapper
 * like `slackChannel` / `eveChannel`) and therefore must be
 * {@link CompiledChannel} values. The legacy plain-`{ fetch, receive? }`
 * Route shape is no longer supported — drop a clear error for it so
 * users on old patterns get a useful migration hint instead of a silent
 * runtime crash deeper in dispatch.
 *
 * Disable sentinels are handled by the compiler before this function is
 * called.
 */
export declare function normalizeChannelDefinition(value: unknown, message: string): CompiledChannel;