import { type ReadKeyFunction, type ReadMultipleKeysFunction } from '../key';
import { type DecisionFunctionFactory } from '../value/decision';
/**
 * Decision function factory that is configured with search string values.
 */
export type SearchStringDecisionFunctionFactory = DecisionFunctionFactory<string, string>;
/**
 * Filters values by the input filter text.
 */
export type SearchStringFilterFunction<T> = (filterText: string, values: T[]) => T[];
/**
 * Configuration for creating a {@link SearchStringFilterFunction}.
 *
 * @template T - The type of values being filtered.
 */
export interface SearchStringFilterConfig<T> {
    /**
     * Reads the search value(s) from the input item to compare against the filter text.
     */
    readStrings: ReadKeyFunction<T, string> | ReadMultipleKeysFunction<T, string>;
    /**
     * Optional decision function factory for matching logic.
     *
     * Defaults to {@link caseInsensitiveFilterByIndexOfDecisionFactory} if not defined.
     */
    decisionFactory?: SearchStringDecisionFunctionFactory;
}
/**
 * Input for creating a {@link SearchStringFilterFunction}. Can be a read function directly or a full config object.
 *
 * @template T - The type of values being filtered.
 */
export type SearchStringFilterFunctionConfigInput<T> = ReadKeyFunction<T, string> | ReadMultipleKeysFunction<T, string> | SearchStringFilterConfig<T>;
/**
 * Creates a {@link SearchStringFilterFunction} that filters values based on whether their string representation matches the filter text.
 *
 * @param config - A read function or full configuration specifying how to extract and match search strings.
 * @returns A function that filters an array of values by a search/filter text string.
 */
export declare function searchStringFilterFunction<T>(config: SearchStringFilterFunctionConfigInput<T>): SearchStringFilterFunction<T>;
/**
 * Default {@link SearchStringDecisionFunctionFactory} that performs case-insensitive substring matching using `indexOf`.
 *
 * @param filterText - The search term to match against.
 * @returns A decision function that returns `true` if the input string contains the filter text (case-insensitive).
 */
export declare const caseInsensitiveFilterByIndexOfDecisionFactory: SearchStringDecisionFunctionFactory;