import { AltEditorLiteError } from './alt-editor-lite-error.js';
import type { AltEditorLiteLanguage } from './alt-editor-lite-language.js';
/** Signal used when normalization is not associated with cancellable work. */
export declare const NEVER_ABORTED_SIGNAL: AbortSignal;
/** Preserves thrown errors and wraps other rejection values without coercion. */
export declare function normalizeRejectedReason(error: unknown): Error;
/**
 * Internal cancellation marker that must never be displayed or published.
 */
export declare class InternalOperationAbort extends Error {
    /** Stable internal discriminator. */
    readonly type = "operation-abort";
    constructor();
}
/**
 * Normalizes callback failures without exposing arbitrary values to the UI.
 *
 * @param rawError - Value thrown or rejected by consumer code.
 * @param signal - Signal owned by the current operation.
 * @param language - Resolved safe fallback text.
 * @returns A public safe error or an internal cancellation marker.
 */
export declare function normalizeOperationError(rawError: unknown, signal: AbortSignal, language: Readonly<AltEditorLiteLanguage>): AltEditorLiteError | InternalOperationAbort;