/**
 * Cross-runtime spawn utilities
 * Works with both Bun and Node.js
 */
export interface SpawnOptions {
    env?: Record<string, string | undefined>;
    cwd?: string;
    stdin?: 'inherit' | 'pipe' | 'ignore';
    stdout?: 'inherit' | 'pipe' | 'ignore';
    stderr?: 'inherit' | 'pipe' | 'ignore';
}
export interface SpawnResult {
    exitCode: number;
    stdout?: string;
    stderr?: string;
}
/**
 * Spawn a process and wait for it to complete
 * Returns exit code (inherits stdio by default)
 */
export declare function spawn(cmd: string[], opts?: SpawnOptions): Promise<number>;
/**
 * Spawn a process and capture its output
 * Returns stdout/stderr as strings
 */
export declare function spawnCapture(cmd: string[], opts?: Omit<SpawnOptions, 'stdout' | 'stderr'>): Promise<SpawnResult>;
/**
 * Check if a command exists in PATH
 */
export declare function commandExists(cmd: string): Promise<boolean>;
/**
 * Get the version of a command (assumes --version flag)
 */
export declare function getCommandVersion(cmd: string): Promise<string | null>;
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