2027029 - Use markdown-it to render assistant chat messages

Status: RESOLVED FIXED

(Core :: Machine Learning: Frontend, task)

Description

[Florian Zia [:flozia]]

At the moment we are using prosemirror-markdown to render chat assistant bubbles. By default it uses CommonMark which does not come with support for table parsing. We’ll need to use and configure markdown-it directly to parse markdown for the assistant chat bubbles instead. In order for us to rollout support for table rendering safely and make alignment with models easier this will need to go behind a pref setting.

Comment 1

[Florian Zia [:flozia]]

Attachment: Bug 2027029 - Part 1: Add support for markdown tables to Smart Window chat messages

Adds support for rendering markdown tables in assistant chat messages. Table elements are wrapped by a custom element for componentization and extending functionality.

Comment 2

[Florian Zia [:flozia]]

Attachment: Bug 2027029 - Part 2: Add tests for markdown table support in Smart Window chat messages

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/24a698e707a5
https://hg.mozilla.org/integration/autoland/rev/26a2153b4567
Part 1: Add support for markdown tables to Smart Window chat messages r=ai-frontend-reviewers,echa
https://github.com/mozilla-firefox/firefox/commit/dc6e968b23d0
https://hg.mozilla.org/integration/autoland/rev/64738bc26698
Part 2: Add tests for markdown table support in Smart Window chat messages r=ai-frontend-reviewers,Gijs

Comment 4

[Serban Stanca [:SerbanS]]

https://hg.mozilla.org/mozilla-central/rev/26a2153b4567
https://hg.mozilla.org/mozilla-central/rev/64738bc26698

Comment 6

[Rares Doghi, Desktop QA]

I was able to verify the fix in our latest Nightly build 152.0a1 (2026-05-07) (64-bit), by manually adding the browser.smartwindow.allowTables - true and asking the Ai to show differences from two different things in a markdown table.

Comment 7

[Ryan VanderMeulen [:RyanVM]]

Is this something we're tracking for Fx151 uplift?

Comment 8

[Ed Lee :Mardak]

if we were to uplift, we would need the chat prompt version bump bug 2026396 as well as some followup bug to actually turn on the pref