/** Breaking text into pieces for a local speech server, so a cancelled call
 *  never holds the server for more than one piece. Copied from the Kokoro
 *  package's textChunks.ts, which has the same need. */
/** `text` in pieces of at most `maxChars`. Pieces break between sentences.
 *  A sentence longer than `maxChars` is split with `splitToFit`. */
export declare function sentencePieces(text: string, maxChars: number): string[];
/** A sentence split into pieces of at most `maxChars`. It splits at commas
 *  first, then at spaces, then inside any word longer than `maxChars`.
 *  Every character except whitespace is kept, in order. */
export declare function splitToFit(sentence: string, maxChars: number): string[];