export declare function findAppRoot(startDir: string): string | null;
export declare function findStackConfigs(appRoot: string): string[];
export declare function getCurrentStack(appRoot: string): string | null;
export declare function readStackConfig(appRoot: string, stack: string, key: string): string | null;
export declare function pulumiStackOutput(appRoot: string, key: string, extraArgs: string[], env?: Record<string, string>): string;