per locale splitting via server middleware

[samuelstroschein]

Context

The server middleware can be used to achieve per locale splitting on the client.

Taks

• const result = trackMessageCalls(() => fn)
• inject message calls in the script to define on a global scope
• index function retrieves the message from the global scope

[samuelstroschein]

Per locale splitting works with the middleware. But MPAs don't work (yet).

SSR works fine, but the moment the client takes routing over, no messages exist in the client-side bundle. Leading to the rendering of nothing.

Furthermore, if #354 is implemented, the requirement for per-locale splitting will likely be severely reduced. The majority of SSR's sites would ship 0kb JS as the usage of dynamic messages that have inputs or multiple variants is rare.

Next steps

• explore filtering the response in the server middleware without effecting client side bundles to not break MPAs, and reduce configuration and complexity

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CleanShot.2025-03-01.at.13.09.26.mp4