import type { SelectItem, SelectOption, SelectOptionsGroup, SelectOptionWithNodeLabel, SelectOptionWithTextLabel } from "../components/select/Select";
export type OptionsSegment = {
    options: SelectOption[];
    type: "options";
};
export type GroupSegment = {
    disabled?: boolean;
    label: string;
    options: SelectOption[];
    type: "group";
};
export type Segment = GroupSegment | OptionsSegment;
export declare function getDataAttributes(option: SelectOption): Record<string, boolean | number | string>;
export declare function isGroup(item: SelectItem): item is SelectOptionsGroup;
export declare function normalizeOptions(items: SelectItem[]): Segment[];
export declare function getSelectableOptionsFromSegments(segments: Segment[]): Array<SelectOptionWithNodeLabel | SelectOptionWithTextLabel>;
export declare function getIndexByLetter(options: SelectOption[], searchString: string, startIndex?: number): number;
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