import { ErrorTransformer, RJSFValidationError, RJSFSchema, UiSchema } from '@rjsf/utils';

/** Read the serialisable field option; empty and non-string values leave defaults intact. */
export declare function keywordMessage(options: Record<string, unknown> | undefined, keyword: string): string | undefined;
/** Only opted-in forms defer their host transform until widget constraints have joined AJV errors. */
export declare function hasKeywordMessages(ui: UiSchema | undefined, data?: unknown, formContext?: unknown): boolean;
type ContextualTransform = (errors: RJSFValidationError[], uiSchema?: UiSchema, schema?: RJSFSchema, data?: unknown) => RJSFValidationError[];
export declare const keywordErrorTransformers: WeakMap<ErrorTransformer, {
    transform: ContextualTransform;
    formContext?: unknown;
    beforeCustom?: ErrorTransformer;
}>;
/** Fold conditional wrappers, apply keyword messages, then let the host win. */
export declare function createErrorTransformer(hostTransform?: ErrorTransformer, formContext?: unknown): ErrorTransformer;
export {};