Add support for print length formatting

[xn1cklas]

Problem Statement

Sometimes content on a single line can be exceedingly long, while UIs rendering chat streams have limited size. Especially when streaming code this can cause inconsistent loading animations during token streams.

Proposed Solution

Add a print length similar to biome / prettier that adds line breaks to content during streaming

Alternatives Considered

No response

Use Case

import { Streamdown } from "streamdown";

export default function Page(markdown: string) {

  return <Streamdown maxContentLength={200px}>{markdown}</Streamdown>;
}

Priority

None

Contribution

• I am willing to help implement this feature

Additional Context

No response