import { type LanguageModel, type ModelMessage, type TelemetryOptions } from 'ai';
import { type ZodTypeAny } from 'zod';
export type StructuredExtractionOutput<TSchema extends ZodTypeAny> = TSchema['_output'];
export interface StructuredExtractionOptions<TSchema extends ZodTypeAny> {
    model: LanguageModel;
    schema: TSchema;
    userMessage: string;
    systemPrompt?: string;
    contextMessages?: ModelMessage[];
    telemetry?: TelemetryOptions;
    abortSignal?: AbortSignal;
}
export declare function extractStructuredFields<TSchema extends ZodTypeAny>(options: StructuredExtractionOptions<TSchema>): Promise<StructuredExtractionOutput<TSchema>>;
/**
 * Build a tool/input schema for extraction submissions.
 *
 * Unlike the completion schema, extraction submissions must allow partial
 * payloads so the model can report only explicitly collected fields instead of
 * fabricating placeholder values to satisfy required constraints.
 */
export declare function toExtractionSubmissionSchema(schema: ZodTypeAny): ZodTypeAny;
export declare function mergeExtractionData(current: Record<string, unknown>, extracted: Record<string, unknown> | null | undefined): Record<string, unknown>;
export declare function computeMissingFields(data: Record<string, unknown>, requiredFields: readonly string[]): string[];
export declare function buildMissingFieldsMessage(missingFields: readonly string[]): string;