Over the last few months, we’ve been working on a new build system for plugin JavaScript code. This will bring plugins up-to-date with the changes we made to the theme build system back in July 2025, which lean on more modern browser technologies and JS build tooling. This change is largely backwar…

The new compiler is now enabled by default in the latest version of Discourse

I think I have an issue with my plugin and this change: [image] Plugin "Duplicate export" error after Discourse update Development Updating to 2026.3.0-latest has broken my plugin again. Can anyone help explain what is wrong? I see this error in the F12…

Thanks for the report! Looking into it now :eyes: Edit: fixed

For anyone interested, I’m going to be talking about our new plugin build system at today’s Ember Europe meetup - 2026-03-26T18:00:00Z (UTC). It’s a fully remote event - all welcome! Q1 2026 Event – fully remote, Do., 26. März 2026, 18:45 | Meetup Finde Meetup-Events, damit du mehr v…

Introducing a new build system for plugins

Development

LeoDavidson (Leo Davidson) March 20, 2026, 3:19pm 3

I think I have an issue with my plugin and this change:

Topic		Replies	Views
Plugin "Duplicate export" error after Discourse update Development plugin-api	3	83	March 20, 2026
FIX: Compile missing rollup plugin bundles on demand in development Bug	6	73	March 20, 2026
Introducing a new JS build system for Discourse core Development dev-news	2	193	June 12, 2026
All plugins not functioning due to CORS error after recent upgrade Self-hosting cdn	22	613	April 10, 2026
Introducing pre-compiled JS assets for self-hosters Announcements	29	1105	November 27, 2025

Introducing a new build system for plugins

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