/**
 * Shell command tokenizer for guardrail compound command parsing
 *
 * Splits compound shell commands (cmd1 | cmd2 && cmd3) into individual
 * subcommands so each can be validated independently against guardrails.
 */
/**
 * A parsed subcommand from a compound shell command
 */
export interface ShellToken {
    /** Trimmed subcommand text */
    command: string;
    /** Operator that preceded this token (undefined for the first) */
    operator?: '|' | '&&' | '||' | ';';
    /** 0-based position in the command sequence */
    index: number;
}
/**
 * Parse a compound shell command into individual subcommands.
 *
 * Handles pipes, logical operators (&&, ||), semicolons, and respects
 * single-quoted, double-quoted, and backtick-quoted strings.
 *
 * @param input - The full command string
 * @returns Array of parsed subcommand tokens
 *
 * @example
 * ```typescript
 * parseShellCommand('ls && rm -rf /tmp')
 * // => [
 * //   { command: 'ls', index: 0 },
 * //   { command: 'rm -rf /tmp', operator: '&&', index: 1 }
 * // ]
 * ```
 */
export declare function parseShellCommand(input: string): ShellToken[];