Analysis of imports and exports with raw untransformed AST

[tmpfs]

I want to analyze the imports and exports exposed by TransformedModule but I also want the underlying module not to be transformed so I can access the original AST.

I think the options are:

1. Load the module using a Parser and reproduce the work to analyze the imports and exports
2. Expose an API on Bundler that would allow bypassing the AST transformations

My preference would be for 2) - do you think we could achieve this easily?

[kdy1]

It's not hard, but I think bundler should not expose such apis.

[tmpfs]

In that case would it be possible to move the logic that builds Imports and Exports to another package so it is re-usable outside the context of swc_bundler?

[kdy1]

Yes, it's possible

[tmpfs]

Great, I would like to try to do this. Would putting the code in swc_dep_graph make more sense than creating a new package?

[kdy1]

I thought they should go into /ecmascript/loader, but I found a more fundamental problem.
The behavior of the loader implementation of bundler is too opinionated for public apis.
It modifies span hygiene data in a way that can be handled by the bundler afterward.
It's an implementation detail and can be changed anytime if I found a better way.

[tmpfs]

I looked into the imports/mod.rs and it appears to be be tightly coupled with the Bundler so it does not look like it could easily be extracted to another package :(