import { Scenario } from './types';
/**
 * Reject a scenario larger than this — a sanity ceiling on untrusted
 * hand-written/loaded JSON, not a quota guard (a scenario object isn't persisted
 * to storage; only its derived flags/journal are). Generous on purpose: an
 * author may inline file contents via `writeFile`/`addFile`, so a real
 * content-heavy story can run to hundreds of KB. 2 MB catches pathological input
 * while comfortably fitting any genuine scenario.
 */
export declare const SCENARIO_MAX_BYTES: number;
export interface ScenarioValidation {
    ok: boolean;
    errors: string[];
    warnings: string[];
}
export declare class ScenarioValidationError extends Error {
    constructor(message: string);
}
/**
 * Validate a scenario object. Returns collected `errors` / `warnings`, each
 * prefixed with the offending path (e.g. `triggers[0].do[1]`). Never throws.
 */
export declare const validateScenario: (scenario: unknown) => ScenarioValidation;
/** Throw {@link ScenarioValidationError} (with all errors) if the scenario is invalid. */
export declare function assertValidScenario(scenario: unknown): asserts scenario is Scenario;