Function Markdown

packages/session-ui/src/components/markdown.tsx:355–515

(
  props: ComponentProps<"div"> & {
    text: string
    cacheKey?: string
    streaming?: boolean
    class?: string
    classList?: Record<string, boolean>
  },
)

}

export function Markdown(
  props: ComponentProps<"div"> & {
    text: string
    cacheKey?: string
    streaming?: boolean
    class?: string
    classList?: Record<string, boolean>
  },
) {
  const [local, others] = splitProps(props, ["text", "cacheKey", "streaming", "class", "classList"])
  const marked = useMarked()
  const i18n = useI18n()
  const [root, setRoot] = createSignal<HTMLDivElement>()
  const owner = createUniqueId()
  const activeCodeKeys = new Set<string>()
  const completedCode = new Map<string, Extract<RenderedBlock, { mode: "code" }>>()
  const projection = createMemo((previous: Projection | undefined) =>
    project(previous, local.text, local.streaming ?? false),
  )
  const [html] = createResource(
    () => {
      return {
        text: local.text,
        key: local.cacheKey,
        projection: projection(),
      }
    },
    async (src) => {
      if (isServer)
        return {
          text: src.text,
          blocks: [
            {
              key: "server",
              mode: "full" as const,
              raw: src.text,
              hash: checksum(src.text) ?? "",
              html: fallback(src.text),
            },
          ],
        } satisfies RenderResult
      if (!src.text) return { text: src.text, blocks: [] } satisfies RenderResult

      const base = src.key ?? checksum(src.text)
      return Promise.all(
        src.projection.blocks.map(async (block, index) => {
          const key = base ? `${base}:${index}:${block.mode}` : undefined
          const blockKey = markdownBlockKey(owner, src.key, index, block.mode)

          if (block.mode === "code") {
            const cached = completedCode.get(blockKey)
            if (block.complete && cached?.raw === block.raw) return cached
            const result = await code(block.src, block.language, blockKey, block.complete)
            const rendered = {
              key: blockKey,
              mode: block.mode,
              raw: block.raw,
              hash: String(block.raw.length),