/**
 * Gets the index of a value from an array of item values.
 * Returns the index if found, otherwise tries to parse as number,
 * or returns 0 as fallback.
 */
export declare function getIndexFromValue(value: string, itemValues: string[]): number;
/**
 * Gets the value at a specific index from an array of item values.
 * Returns the value if index is valid, otherwise returns String(index).
 */
export declare function getValueFromIndex(index: number, itemValues: string[]): string;
/**
 * Registers a select item in the context arrays.
 * Inserts the item at the specified index position in the arrays.
 */
export declare function registerItem(params: {
    index: number;
    itemRef: {
        value: HTMLElement | undefined;
    };
    itemValue: string;
    disabled: boolean | undefined;
    itemRefsArray: {
        value: Array<{
            value: HTMLElement | undefined;
        }>;
    };
    itemValuesArray: {
        value: string[];
    };
    itemDisabledArray: {
        value: boolean[];
    };
}): void;