Function project

packages/session-ui/src/components/markdown-stream.ts:93–110

(previous: Projection | undefined, text: string, live: boolean)

}

export function project(previous: Projection | undefined, text: string, live: boolean): Projection {
  if (!live || !previous || !text.startsWith(previous.text)) return { text, blocks: stream(text, live) }
  const tail = previous.blocks.at(-1)
  const suffix = text.slice(previous.text.length)
  if (!suffix || tail?.mode !== "code" || tail.complete || closesFence(tail.raw, suffix))
    return { text, blocks: stream(text, live) }
  return {
    text,
    blocks: [
      ...previous.blocks.slice(0, -1),
      {
        ...tail,
        raw: tail.raw + suffix,
        src: tail.src + suffix,
      },
    ],
  }
}