/**
 * Plugin Package Reader
 *
 * Reads plugin package contents including instruction files,
 * migration descriptors, and process definition files.
 */
import { MigrationDescriptor, PluginPackageInfo } from "./types";
/**
 * Reads all metadata and instruction files from a plugin package directory.
 *
 * @param packageDir - Absolute path to the plugin package directory
 */
export declare function readPluginPackage(packageDir: string): Promise<PluginPackageInfo>;
/**
 * Reads the install instructions markdown file from a plugin package.
 *
 * @param packageDir - Absolute path to the plugin package directory
 */
export declare function readInstallInstructions(packageDir: string): Promise<string | undefined>;
/**
 * Reads the uninstall instructions markdown file from a plugin package.
 *
 * @param packageDir - Absolute path to the plugin package directory
 */
export declare function readUninstallInstructions(packageDir: string): Promise<string | undefined>;
/**
 * Reads the configure instructions markdown file from a plugin package.
 *
 * @param packageDir - Absolute path to the plugin package directory
 */
export declare function readConfigureInstructions(packageDir: string): Promise<string | undefined>;
/**
 * Lists all migration descriptors found in the migrations/ subdirectory.
 * Filenames must follow the pattern: `<from>_to_<to>.<ext>`
 *
 * @param packageDir - Absolute path to the plugin package directory
 */
export declare function listMigrations(packageDir: string): Promise<MigrationDescriptor[]>;
/**
 * Reads the content of a specific migration file.
 *
 * @param packageDir - Absolute path to the plugin package directory
 * @param from - Source version
 * @param to - Target version
 */
export declare function readMigration(packageDir: string, from: string, to: string): Promise<string>;
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