Provide custom rollup.prod.config.js?

[ionic-team]

Provide custom rollup.prod.config.js?

[trkoch]

Seems like npm config settings take precedence no matter what the environment. I guess what we need here is a ionic_rollup_prod config property.

[trkoch]

I'm also looking for a way to do this. Maybe related, I noticed that providing a custom rollup.config.js breaks npm run build and therefore ionic build.

[fifafu]

providing a custom rollup.config.js works fine for me, how does yours look like?

[trkoch]

What I meant is that if you provide a rollup.config.js this works for development, but breaks production.

[fifafu]

Ah yes, because it can't find the correct file in the .tmp folder. That is why I'm looking for a way to provide the config.prod.config.js file (all it does is changing the entry file name)

[trkoch]

One workaround is to append the --rollup parameter to ionic-app-scripts build. In your package.json replace "build": "ionic-app-scripts build with "build": "ionic-app-scripts build -r ./config/rollup.prod.config.js" (obviously adjusting paths to your preferences)

[fifafu]

or alternatively make the rollup.config.js export a function that takes the build mode as parameter. Then we'd only need one file to handle dev and prod.

[jgw96]

Hello all! I am taking a look at this as we speak. Thanks for all the feedback!

[adamdbradley]

Thinking we can use the --environment flag here: https://github.com/rollup/rollup/wiki/Command-Line-Interface#examples

Then only have one config which could have if statements in it. Thoughts?