import { Action } from "../../core/pipeline/Action";
import { ActionOptionsType } from "../../types/ActionOptionsType.js";
/**
 * PackageManagerAction handles reading, validating, and creating `package.json`
 * files, supporting custom configurations and merging with selected fields.
 */
export declare class PackageManagerAction extends Action {
    /**
     * Executes the package management action.
     * Reads an existing `package.json`, extracts selected fields, and writes a new one.
     *
     * @param options - Options specifying input path, output directory, and fields to export.
     * @returns A Promise that resolves when the action is completed successfully.
     * @throws {Error} Throws an error if neither `packageJsonPath` nor `outputDir` is provided.
     */
    execute(options: ActionOptionsType): Promise<void>;
    /**
     * Reads and parses an existing `package.json`.
     *
     * @param packageJsonPath - Path to the `package.json` file.
     * @returns Parsed JSON object.
     * @throws {Error} If the file does not exist or contains invalid JSON.
     */
    private readPackageJson;
    /**
     * Filters specified fields from a `package.json` object.
     *
     * @param config - The original package.json object.
     * @param fields - List of fields to extract.
     * @returns A new object containing only the selected fields.
     */
    private filterFields;
    /**
     * Creates a `package.json` file with selected fields and custom overrides.
     *
     * @param outputDir - Directory where the new `package.json` will be created.
     * @param filteredConfig - The filtered package.json fields.
     * @param customConfig - Custom overrides to apply.
     * @returns A Promise that resolves when the file has been successfully created.
     * @throws {Error} If the file cannot be written.
     */
    private createPackageJson;
    /**
     * Ensures that the specified directory exists, creating it if it does not.
     *
     * @param dirPath - The path of the directory to verify or create.
     * @returns A Promise that resolves once the directory is verified or created.
     * @throws {Error} If the directory cannot be created.
     */
    private ensureDirectoryExists;
    /**
     * Provides a description of the action.
     *
     * @returns A string description of the action.
     */
    describe(): string;
}