import { type PrimativeKey, type ReadKeyFunction } from '../key';
import { type DecisionFunction } from '../value';
/**
 * Factory that creates a DecisionFunction using the input "selected" values. That function returns true if the value's key is considered to be included in the selected values.
 */
export type IsSelectedDecisionFunctionFactory<T, K extends PrimativeKey = PrimativeKey> = (selectedValues: Iterable<K>) => DecisionFunction<T>;
/**
 * Configuration for {@link isSelectedDecisionFunctionFactory}.
 */
export interface IsSelectedDecisionFunctionConfig<T, K extends PrimativeKey = PrimativeKey> {
    /**
     * Reads the key from the input value.
     */
    readKey: ReadKeyFunction<T, K>;
    /**
     * Default value to use if readKey returns no key.
     *
     * Defaults to false.
     */
    defaultIfKeyNull?: boolean;
}
/**
 * Creates an {@link IsSelectedDecisionFunctionFactory} that produces decision functions
 * checking whether a value's key is included in a set of selected values.
 *
 * @param config - Configuration with the key reader and default behavior.
 * @returns A factory that creates decision functions from a set of selected keys.
 */
export declare function isSelectedDecisionFunctionFactory<T, K extends PrimativeKey = PrimativeKey>(config: IsSelectedDecisionFunctionConfig<T, K>): IsSelectedDecisionFunctionFactory<T, K>;