Production build breaks future development

[marcushellberg]

Description of the bug

After building a production build of my 24.5 application, development mode is broken.

Initially, I was missing the dev mode gizmo and no changes were reloaded

After running mvn clean, I got an empty screen with the following error in the browser console

copilot-Cn85U7pa.js:5073 Uncaught TypeError: Cannot read properties of undefined (reading 'push')
    at copilot-Cn85U7pa.js:5073:20

Finally, after deleting src/main/bundles/prod.bundle, did the app start working again as expected.

Expected behavior

Creating a production build should not break development mode. I should continue to be able to run Application.java and have access to the dev mode gizmo and its features. I should not need to run mvn clean or delete any files to get my app back to a working state.

Minimal reproducible example

App from start.vaadin.com with Flow and Hilla views.

Versions

• Vaadin / Flow version: 24.5
• Java version: 21

[caalador]

Can not reproduce the issue. Any specific steps to get it to reproduce?

[marcushellberg]

For me, it was enough to run one mvn -Pproduction package to get this to happen.

[caalador]

For some reason not when running mvn package -Pproduction but instead mvn install -Pproduction I get left with flow-build-info.json in target/classes which says "productionMode": true, and as that's not cleaned when starting in development mode, so it is found and the state is set to production for the running application.

[caalador]

Seems the main issue is somewhere in vaadin-spring init (running Application from idea for example), as running the application in dev mode using maven we do get the development mode correctly.

[marcushellberg]

Yes, I always run the application from the IDE, not through maven.