export interface IDisposable {
    dispose(): void;
}
/**
 * Watches a file path for change/create events.
 * VS Code implementation uses `vscode.workspace.createFileSystemWatcher`.
 * Node.js implementation uses `fs.watch` on the parent directory.
 */
export interface IFileWatcher {
    watch(filePath: string, onChange: () => void): IDisposable;
}
/**
 * Launches a shell command in a named context.
 * VS Code implementation creates an integrated terminal.
 * Node.js implementation uses `child_process.spawn`.
 */
export interface IProcessLauncher {
    launch(cmd: string, name: string, cwd: string): void;
}
/**
 * Watches the parent directory of `filePath` and fires `onChange` whenever
 * the target file changes or is created.  Handles non-existent directories
 * gracefully (watcher is a no-op until the directory appears).
 */
export declare class NodeFileWatcher implements IFileWatcher {
    watch(filePath: string, onChange: () => void): IDisposable;
}
/**
 * Spawns a shell process (stdout/stderr inherited to the parent process).
 * On Windows uses `powershell -Command`; on Unix uses `/bin/sh -c`.
 */
export declare class NodeProcessLauncher implements IProcessLauncher {
    launch(cmd: string, name: string, cwd: string): void;
}