import type { CollectNode, FlowState, SlotSource } from '../types/flow.js';
export interface DeterministicSlotResult {
    resolved: Record<string, unknown>;
    ambiguous: string[];
    slotSources: Record<string, SlotSource>;
}
export declare function resolveDeterministicSlots(node: CollectNode, args: {
    userText: string;
    state: FlowState;
    missing: readonly string[];
}): DeterministicSlotResult;
/**
 * Drop model-extracted values that cannot be found in the source turn.
 *
 * The guard applies ONLY to fields the node declares in `verbatimFields`. It compares the
 * extracted value against the raw turn text, so it can only judge slots the user is
 * expected to quote — an account id, an order number, a name. Extraction otherwise
 * normalises: "next Friday" becomes an ISO date, "four" becomes 4, a spoken complaint
 * becomes a written summary, and a list-reply payload never appears in the turn text at
 * all. Guarding those by containment drops correct values, and a dropped required field
 * stalls the collect node until it exhausts maxTurns. Declaring the guarded fields keeps
 * the anti-fabrication property where lexical evidence means something.
 *
 * No source text (undefined or blank) skips the guard — scripted merges with empty
 * history still accept values.
 */
export declare function filterByProvenance(incoming: Record<string, unknown>, sourceText: string | undefined, guardedFields: readonly string[] | undefined): {
    accepted: Record<string, unknown>;
    dropped: string[];
};
export declare function valueHasProvenance(value: unknown, sourceText: string): boolean;
export declare function extractNumbers(text: string): number[];