export declare type Command = string | (() => void | Promise<void>);
export declare type ExecuteCommandOptions = {
    log?(command: string): void;
};
/**
 * A helper function that executes a single shell command or JavaScript function.
 * Supports asynchronous JS functions, and executes shell commands in a child process
 * so that the event loop is not blocked while executing the command.
 * @param command
 * @param options
 * @return A promise that resolves if the command was successful, otherwise throws an `Error`. If the
 * command is a shell command, the error message will be stderr of the command.
 */
export declare function executeCommand(command: Command, { log }?: ExecuteCommandOptions): Promise<void>;