/**
 * Escape a string for safe use in shell commands.
 * Uses single quotes and escapes any embedded single quotes.
 */
export declare const shellEscape: (str: string) => string;
export type ExecResult = {
    exitCode: number;
    stdout: string;
    stderr: string;
    durationMs: number;
};
export type ExecOptions = {
    cwd?: string;
    timeout?: number;
    env?: Record<string, string>;
};
export declare const exec: (command: string, args?: string[], options?: ExecOptions) => Promise<ExecResult>;
export declare const execShell: (command: string, options?: ExecOptions) => Promise<ExecResult>;
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