support alias definitions in package.json

[schlichtanders]

I am trying to get importmaps running for preact in combination with @mui/material (which needs react to be aliased to preact/compat and similar).

While importly is the only import map generator so far which does not fail creating an importmap on nodemodules, it unfortunately does not respect the alias mapping.
React is not pointed towards preact/compat...

Please advise on how to set aliases, as preact would really be awesome in such an importmap setup

[chase-moskal]

👋 hey, this is definitely something importly should support.

i'm planning to do a big overhaul of importly, and i want aliases to be a feature of this next version.

i'm very busy so i have no idea when i'll scrape up the time to give this the attention is deserves, so in the meantime, i'd be happy to review and potentially merge a pull request as an interim hotfix for this issue.

[schlichtanders]

I am still looking for a quicker workaround (something around specifying the importmaps manually) in order to get the aliasing working.

I am really surprised that no npm to importmap solution I found so far supports aliases. Surprising