what transformations do you have in mind?

yes, you can do that in build hooks but you kinda have to be careful about what you are doing as you may potentially break caching. also possibly weird issues when not respecting how watch works (incremental compiles)

yes, you can look at all metadata in build hooks

not sure what your intent is though as the generated JS isn't exactly easy to process

Thanks for the reply! Any hint about what are the involved keys? Just want to pass a babel plugin to the JS output.

to do what?

I'm asking because I want to safe you the time of doing something that is maybe covered elsewhere

Oh yeah, sorry. Involved keys in build hooks to check the metadata, and to apply a babel plugin to the JS code related to that metadata.

what babel plugin? what does that do?

and what does the metadata provide for it to do?

I mean have you looked at the actual JS output? are you sure the babel plugin is going to be able to do what you want to do?

About the metadata, nothing specific, it would work just as a flag to apply the plugin

you are being very vague so I'm just gonna tell you want you want to know and skip trying to safe time

the build state the build hook receives contains all the data

you can tap> it and look at it in the inspect UI

I'd suggest clicking arround

And yes, I'm sure about the pluging working as expected, I applied the plugin to the strings passed to evalLoad in index.js and it works well. I'll share the plugin link in a sec

the relevant bits are in :sources which is a map of all the sources revelant to the build

in :output you find the generated :js code

you want the build hook to run in stage :compile-finish

its all just clojure data

the analyzer data you find in [:compiler-env :cljs.analyzer/namespaces your.ns :defs your-var :meta]

again look at it in the UI, pretty self explanatory from there

:js is the field being later generated into the evalLoad argument, and is the final JS being loaded

you are being very vague so I'm just gonna tell you want you want to know and skip trying to safe time> Sorry, I'm on my phone rn 😅 And also I say nothing concrete/specific because it's something to be created, the metadata can be whatever I find better. The plug-in link (animated babel parser for react-native): https://github.com/software-mansion/react-native-reanimated/tree/main/plugin/src

Thanks for all the explanation!!

there is :shadow.build/build-info and that has a :compiled key

which is a set of resource ids that got compiled

resource id is the key in the :sources and :output maps

watch works by removing :output prior to compiling it again

so if you want you can keep state in :output yourself, so for files you have processed you can set a boolean or something

if that is not set it means it needs processing

Ok thanks again!