import type { Simctl } from '../simctl';
import type { TeenProcessExecResult, SubProcess } from 'teen_process';
/**
 * Spawn the particular process on Simulator.
 * It is required that Simulator is in _booted_ state.
 *
 * @param args - Spawn arguments
 * @param env - Additional environment variables mapping.
 * @return Command execution result.
 * @throws {Error} If the corresponding simctl subcommand command
 *                 returns non-zero return code.
 * @throws {Error} If the `udid` instance property is unset
 */
export declare function spawnProcess(this: Simctl, args: string | string[], env?: Record<string, any>): Promise<TeenProcessExecResult<string>>;
/**
 * Prepare SubProcess instance for a new process, which is going to be spawned
 * on Simulator.
 *
 * @param args - Spawn arguments
 * @param env - Additional environment variables mapping.
 * @return The instance of the process to be spawned.
 * @throws {Error} If the `udid` instance property is unset
 */
export declare function spawnSubProcess(this: Simctl, args: string | string[], env?: Record<string, any>): Promise<SubProcess>;
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