import type { AbstractBaseCommand, CommandMetaData, LoadersContract } from '../types.ts';
/**
 * Fs loader exposes the API to load commands from a directory. All files
 * ending with ".js", ".cjs", ".mjs", ".ts" and ".mts" are considered
 * as commands
 *
 * @example
 * ```ts
 * const loader = new FsLoader('./commands')
 * const metadata = await loader.getMetaData()
 * const command = await loader.getCommand(metadata[0])
 * ```
 */
export declare class FsLoader<Command extends AbstractBaseCommand> implements LoadersContract<Command> {
    #private;
    /**
     * Create a new filesystem loader
     *
     * @param comandsDirectory - Path to the directory containing command files
     * @param filter - Optional filter function to exclude certain files
     */
    constructor(comandsDirectory: string, filter?: (filePath: string) => boolean);
    /**
     * Returns the metadata of all commands in the directory
     *
     * @example
     * ```ts
     * const metadata = await loader.getMetaData()
     * metadata.forEach(cmd => console.log(cmd.commandName))
     * ```
     */
    getMetaData(): Promise<CommandMetaData[]>;
    /**
     * Returns the command class constructor for a given command. Null
     * is returned when unable to lookup the command
     *
     * @param metaData - The command metadata to find
     *
     * @example
     * ```ts
     * const command = await loader.getCommand(metadata)
     * if (command) {
     *   const instance = new command(kernel, parsed, ui, prompt)
     * }
     * ```
     */
    getCommand(metaData: CommandMetaData): Promise<Command | null>;
}