Crate autumn_plugin_markstream 

markstream for Autumn: render and stream Markdown with Maud and htmx.

Add MarkstreamPlugin to the app. Put markstream_head() in the page head. Render Markdown with Markstream, and stream it with sse::markstream_sse:

use autumn_plugin_markstream::sse::{markstream_sse, stream};
use autumn_plugin_markstream::{Markstream, MarkstreamPlugin, Mode, markstream_head};
use autumn_web::prelude::*;

#[get("/")]
async fn index() -> Markup {
    html! {
        html {
            head { (markstream_head()) }
            body {
                (Markstream::new("# Hello\n\nSome *Markdown*."))
                (Markstream::stream("/answer").mode(Mode::Chat))
            }
        }
    }
}

#[get("/answer")]
async fn answer() -> impl IntoResponse {
    markstream_sse(stream::iter(["## Answer\n", "Some ", "*text*."]))
}

autumn_web::app()
    .plugin(MarkstreamPlugin::new())
    .routes(routes![index, answer])
    .run()
    .await;

The crate vendors markstream-vue MARKSTREAM_VERSION and Vue VUE_VERSION (runtime build). Autumn serves them from memory under /static/_plugins/markstream/. The page needs no inline script and no import map, so the default Autumn CSP works.

Limits

• Syntax highlighting is light: keywords, strings, numbers and comments for common languages. It is not Monaco or Shiki.
• No Mermaid, D2 or infographic. These blocks show their source.
• No KaTeX unless the page loads KaTeX as a global (window.katex).
• The browser does not reconnect a stream. A dropped stream shows the error state.

Modules

sse

Server-Sent Events that stream Markdown into a Markstream.

Structs

Markstream

One markstream container: Markdown, an optional stream URL and options.

MarkstreamPlugin

Installs the markstream assets in an Autumn app.

Enums

HtmlPolicy

What markstream does with raw HTML in the Markdown (htmlPolicy prop).

Mode

The markstream render mode (mode prop).

Theme

The color theme.

Constants

ALLOW_TRUSTED_META

Name of the meta tag that allows HtmlPolicy::Trusted on a page.

ASSETS_NAMESPACE

URL namespace of the bundle: /static/_plugins/markstream/.

MARKSTREAM_VERSION

Vendored markstream-vue version.

PLUGIN_NAME

The plugin name in Autumn diagnostics.

VUE_VERSION

Vendored Vue version (runtime ESM build).

Statics

MARKSTREAM_ASSETS

The plugin asset bundle.

Functions

markstream_allow_trusted

Writes the meta tag that allows HtmlPolicy::Trusted on this page.

markstream_head

Writes all markstream head tags: styles, preloads, then the script.

markstream_preloads

Writes one <link rel="modulepreload"> for core.js and for each eager module.

markstream_script

Writes the <script type="module"> tag for the init module.

markstream_stylesheet

Writes the <link rel="stylesheet"> tags: markstream, then the plugin.