import { Context, Effect, Layer } from "effect";
import type { FilesystemError } from "../effects/errors.js";
/**
 * Filesystem service interface with Effect-based operations
 *
 * @purity SHELL
 * @effect All operations return Effect for explicit error handling
 */
export interface FilesystemService {
    readonly readDirectory: (dirPath: string) => Effect.Effect<readonly string[], FilesystemError, never>;
    readonly fileExists: (filePath: string) => Effect.Effect<boolean, never, never>;
    readonly resolveRelativePath: (from: string, to: string) => Effect.Effect<string, never, never>;
    readonly getFileExtension: (filePath: string) => Effect.Effect<string, never, never>;
}
declare const FilesystemServiceTag_base: Context.TagClass<FilesystemServiceTag, "FilesystemService", FilesystemService>;
/**
 * Filesystem service tag for dependency injection
 *
 * @purity SHELL
 */
export declare class FilesystemServiceTag extends FilesystemServiceTag_base {
}
/**
 * Creates Filesystem service implementation
 *
 * @returns Service implementation
 *
 * @purity SHELL
 * @effect Creates service with filesystem effects
 * @complexity O(1) for service creation
 * @throws Never - все ошибки типизированы в Effect
 */
export declare const makeFilesystemService: () => FilesystemService;
/**
 * Creates Filesystem service layer
 *
 * @returns Service layer for dependency injection
 *
 * @purity SHELL
 * @effect Creates Layer for Effect composition
 * @complexity O(1)
 * @throws Never
 */
export declare const makeFilesystemServiceLayer: () => Layer.Layer<FilesystemServiceTag, never, never>;
export {};
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