import { DropdownFilter, DropdownOption, DropdownProps } from './Dropdown.types';
/** An option normalized for base-ui: a stable key plus its value and label. */
export type DropdownItem = {
    key: string;
    value: string;
    label: string;
};
/** Reads a value string from a selection item: a bare string or `{ value }`. */
export declare const readOptionValue: (item: unknown) => string | null;
/** Drops blank-label options and assigns stable index keys. */
export declare const toOptionItems: (options: Array<DropdownOption>) => Array<DropdownItem>;
/** Normalizes the bound `value` (string, `string[]`, or `{ value }[]`) to values. */
export declare const readSelectedValues: (rawValue: unknown, isMultiple: boolean) => Array<string>;
/** Builds the per-item match used to filter the list against the typed query. */
export declare const createFilterItem: (params: {
    customFilter?: DropdownFilter;
    isSearchable: boolean;
    isMultiple: boolean;
    inline: boolean;
}) => (item: DropdownItem, typed: string) => boolean;
export declare const emitChange: (onChange: NonNullable<DropdownProps["onChange"]>, value: string | Array<string>) => void;
export declare const emitInput: (onInput: NonNullable<DropdownProps["onInput"]>, value: string) => void;