import { FlattenOptionData } from '../interface';
import { BaseOptionType, DefaultOptionType, FieldNames } from '../Select';
export declare function isValidCount(value?: number): boolean;
export declare function fillFieldNames(fieldNames: FieldNames | undefined, childrenAsData: boolean): Required<FieldNames>;
/**
 * Flat options into flatten list.
 * We use `optionOnly` here is aim to avoid user use nested option group.
 * Here is simply set `key` to the index if not provided.
 */
export declare function flattenOptions<OptionType extends BaseOptionType = DefaultOptionType>(options: OptionType[], { fieldNames, childrenAsData }?: {
    fieldNames?: FieldNames;
    childrenAsData?: boolean;
}): FlattenOptionData<OptionType>[];
/**
 * Inject `props` into `option` for legacy usage
 */
export declare function injectPropsWithOption<T extends object>(option: T | undefined): T | undefined;
export declare function getSeparatedContent(text: string, tokens: string[], end?: number): string[] | null;