/**
 * Finds the index of the next word in a text starting from a given index.
 * @param text - The text to search.
 * @param startIndex - The index to start searching from.
 * @returns the start index of the next word or the end of the text.
 * @internal
 */
export declare const findNextWordIndex: (text: string, startIndex: number) => number;
/**
 * Finds the index where two strings first differ.
 * @param oldText - The already rendered string.
 * @param newText - The new string to be rendered.
 * @returns the index where strings first differ.
 * @internal
 */
export declare const findFirstDiffIndex: (oldText: string, newText: string) => number;