import type { FileSystem } from "./filesystem.js";
import type { JsonCodec } from "./codec.js";
/**
 * Validate that an object satisfies the FileSystem port contract at
 * runtime. Call this at adapter construction boundaries to catch
 * broken mocks and incomplete implementations early.
 */
export declare function assertFileSystem(impl: unknown): asserts impl is FileSystem;
/**
 * Validate that an object satisfies the JsonCodec port contract at
 * runtime. Call this at adapter construction boundaries to catch
 * broken mocks and incomplete implementations early.
 */
export declare function assertJsonCodec(impl: unknown): asserts impl is JsonCodec;
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