Can multiple extensions be created for an app?
For example, you can have a theme extension, a function extension and a checkout extension in a app.
I have created a function extension and a theme extension but when I do a yarn dev it only runs the theme extension.
How can I run multiple extensions?
Hi, I also have the same query - Can multiple extensions be created for an app?
@sergio19 Please confirm, any workaround which you are able to figure out or still blocked on the same ?
Hi,still blocked, the cloud function is installed with api, but theme and checkout extension no, I don’t know how you can work with both in one app 
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Did you ever make any progress here? Shopify has done a terrible job of explaining the new Checkout Extensibility and how you’re to use it from a developer standpoint. Their documentation is all over the place but nothing is cohesive.
Honestly I have been thinking the same lately. It looks like there’s loads of decent docs but when you read a little further…it’s legit all over the place.
I’m using npm not yarn, but you can translate as needed. I ran npm run shopify app generate extension -- --reset within my existing app. It prompted me through what type of extension, what to name it, and what language to work in. I included the --reset flag with the CLI command to reset the shopify.app.toml file.
Your app’s final structure will look like the example found in the docs here: https://shopify.dev/docs/apps/build/cli-for-apps/app-structure/. When I run npm run dev, the CLI asks which store I want to use, I select my dev store, and it offers different options for opening GraphiQL (Admin API) and previewing in the browser, among other things.
Hope that helps!