import type { AccessPolicy, PolicyInput } from './types.js';
export interface PolicyDecision {
    readonly allow: boolean;
    readonly reason: string;
    readonly obligations?: Readonly<Record<string, unknown>>;
}
export interface PolicyRule<State> {
    readonly name: string;
    readonly effect: 'allow' | 'deny';
    readonly commands?: readonly string[];
    readonly roles?: readonly string[];
    readonly when?: (input: PolicyInput<State>) => boolean | Promise<boolean>;
    readonly reason?: string;
}
export interface PolicyEngine<State> {
    evaluate(input: PolicyInput<State>): Promise<PolicyDecision>;
    policy(): AccessPolicy<State>;
    simulate(inputs: readonly PolicyInput<State>[]): Promise<readonly PolicyDecision[]>;
}
export declare function forgePolicyEngine<State>(rules: readonly PolicyRule<State>[], options?: {
    readonly defaultEffect?: 'allow' | 'deny';
    readonly roleTag?: string;
}): PolicyEngine<State>;
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