export declare const ComboboxAction: {
    readonly ClosePopup: "ClosePopup";
    readonly CommitAndClose: "CommitAndClose";
    readonly MoveFirst: "MoveFirst";
    readonly MoveLast: "MoveLast";
    readonly MoveNext: "MoveNext";
    readonly MovePrevious: "MovePrevious";
    readonly OpenPopup: "OpenPopup";
    readonly TypeCharacter: "TypeCharacter";
};
export type ComboboxAction = (typeof ComboboxAction)[keyof typeof ComboboxAction];
/**
 * Returns the combobox action for a keyboard event, based on whether the
 * popup is currently open or closed. Returns `undefined` when the key has
 * no mapped behavior.
 */
export declare function getComboboxActionFromKey(event: Pick<KeyboardEvent, "altKey" | "ctrlKey" | "key" | "metaKey">, popupIsOpen: boolean): ComboboxAction | undefined;
/**
 * Calculates the next active option index given the current index and the
 * navigation action. Clamps the result within bounds.
 * Skips disabled options by searching forward or backward from the target index.
 * Returns -1 if all options are disabled.
 */
export declare function getUpdatedIndex(currentIndex: number, action: ComboboxAction, options: Array<{
    disabled?: boolean;
}>): number;
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