/**
 * Copyright 2023 Kapeta Inc.
 * SPDX-License-Identifier: MIT
 */
/// <reference types="node" />
/// <reference types="node" />
import { GeneratedAsset, GeneratedResult } from './types';
import FS from 'fs';
export declare const ASSETS_FILE: string;
export declare const MODE_MERGE = "merge";
export declare const MODE_CREATE_ONLY = "create-only";
export declare const MODE_WRITE_ALWAYS = "write-always";
export declare const MODE_WRITE_NEVER = "write-never";
export declare const DEFAULT_FILE_PERMISSIONS = "644";
export interface FileSystemHandler {
    write: (filename: string, content: string | Buffer, permissions?: string) => void;
    read: (filename: string) => Buffer;
    readDir: (filename: string) => string[];
    exists: (filename: string) => boolean;
    removeFile: (filename: string) => void;
    removeDir: (filename: string) => void;
    stat: (filename: string) => FS.Stats;
    mkdirp: (dirname: string) => void;
}
export interface CodeWriterOptions {
    skipAssetsFile?: boolean;
    fileSystemHandler?: FileSystemHandler;
}
export declare class CodeWriter {
    private readonly _baseDir;
    private readonly _options;
    static getInternalMergePath(filename: string): string;
    constructor(basedir: string, options?: CodeWriterOptions);
    private get fs();
    /**
     * Ensures the target folder exists and returns the full path
     */
    private _ensureDestinationFolder;
    /**
     * Get a file checksum from its contents
     */
    private _getFileChecksum;
    /**
     * Update files using generated code - respecting the mode of the file
     * and checking if the file has changed since last time we generated it
     *
     */
    private _updateAssetFile;
    private _writeFile;
    /**
     * Reads the Kapeta assets bookkeeping file that allows us to
     * determine whether individual assets changed
     *
     */
    private _readAssetsFile;
    /**
     * Update the assets bookkeeping file
     */
    private _writeAssetsFile;
    /**
     * Check if an asset has manual changes since it was generated
     */
    private _hasManualChanges;
    /**
     * Clean up assets that we no longer need and have no changes
     */
    private _cleanupAssets;
    private isFolderEmpty;
    private deleteEmptyFolder;
    /**
     * Takes the output from the code generator and persists it to file
     */
    write({ files, target }: GeneratedResult): GeneratedAsset[];
}