/**
 * Shell Command Gate
 *
 * Evaluates shell commands before execution, blocking dangerous operations.
 */
import type { GatePolicy, GateResult, ShellExecOptions, CommandResult } from './types.js';
export declare class ShellGate {
    private policy;
    constructor(policy: GatePolicy);
    /**
     * Execute a shell command through the gate.
     * Evaluates consequences first, then executes if allowed.
     */
    exec(command: string, options?: ShellExecOptions): Promise<GateResult<CommandResult>>;
    /**
     * Evaluate a command without executing it.
     * Useful for preview/dry-run scenarios.
     */
    evaluate(command: string, cwd?: string): Promise<GateResult>;
    private shouldEscalate;
    private shouldExecute;
    private runCommand;
}
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