import type { FailureCategory, OperationOutcome } from './types.ts';
export declare const FAILURE_CATEGORIES: readonly ["application", "timeout", "cancellation", "resource", "system"];
export declare const timeoutFailureCategoryMarker: unique symbol;
export interface FailureCategoryClassificationOptions {
    /**
     * Category to use for ordinary Error instances that do not match a known
     * infrastructure name. Omit this at engine boundaries so unknown runtime
     * failures stay classified as system failures.
     */
    defaultErrorCategory?: FailureCategory;
}
export declare function isFailureCategory(value: unknown): value is FailureCategory;
export declare function normalizeFailureCategory(value: unknown): FailureCategory | undefined;
export declare function failureCategorySearchValues(category: FailureCategory): readonly string[];
export declare function classifyErrorAsFailureCategory(error: unknown, options?: FailureCategoryClassificationOptions): FailureCategory;
export declare function errorFromFailedOperationOutcome(outcome: Extract<OperationOutcome, {
    status: 'failed';
}>): Error;