import type { SearchOptions } from "./utils";
export interface CaseInsensitiveOptions<T = unknown> extends SearchOptions<T> {
    /**
     * Boolean if the filter should also exclude all items that do not start with
     * the query string. The default behavior is to return all matches that
     * contain the query string anywhere.
     */
    startsWith?: boolean;
}
/**
 * Filters a list by ensuring that all items contain the query string in order
 * anywhere in it's own value.
 *
 * @param query - The current query string
 * @param searchable - The list of searchable items that should be filtered
 * @param options - All the search options to use
 * @returns A filtered list of all the searchable items based on the query
 * string.
 */
export declare function caseInsensitiveFilter<T = unknown>(query: string, searchable: readonly T[], options?: CaseInsensitiveOptions<T>): readonly T[];