test: add specs for node loader

[JulienKode]

Description

The goal of this PR is to:

• Implement basic hoisting for monorepo
• add specs for the node loader

This add the two following spec:

• basic import (currently pass)
• hoisting (currently do not pass)

Current issue with relative Path

When you use Path and you are at . when you ask the parent it will not give you ../ resulting in a None state.

New approach

I do not know if this new approach is the best way to handle it as I'm new with rust.

We are now using absolute path so we can always get the parent except when we are at the root, and we are using pathdiff (which is used by rust itself rust-lang/rust#67108) to get the relative path with:

• the path where we find the node_modules
• the current directory

There are still a lof of unwrap in this first draft, so I might need to do some additional changes

BREAKING CHANGE:

No breaking change in terms of API

Related (if exists):

• Use pathdiff crate for path_relative_from rust-lang/rust#67108
• https://github.com/rust-lang/rust/blob/e1d0de82cc40b666b88d4a6d2c9dcbc81d7ed27f/src/librustc_back/rpath.rs#L116-L158
• https://stackoverflow.com/questions/39340924/given-two-absolute-paths-how-can-i-express-one-of-the-paths-relative-to-the-oth

[kdy1]

Please use https://github.com/kdy1/swc/tree/node-resolver
You can make a PR towards it, if you prefer it

[JulienKode]

Thanks,
I'll do an update based on this PR,
I want to see the hoisting test fail on this PR to make sure the setup and specs are right

[kdy1]

Tests look good to me.

[JulienKode]

close in favour of #4327