Snowpack doesn't support private class method:

[noseratio]

If I try to build (with snowpack build), I'm getting this error: Unexpected token (4:2) , which maps to #test().

export class Test {
  #test() {
  }
}

If I change #test() to (for example) _test(), the issue disappears. Is there an option to make snowpack to recognize private class fields by default?

[FredKSchott]

Can you share your snowpack config file? If you're using Babel to build your files, you may need to add a babel plugin to support this newer syntax.

esbuild powers our built-in file build by default, which does support private syntax. Our older React/Preact CSA templates used Babel, but our latest templates now use esbuild by default. Trying out the new CSA template (or, just grabbing the latest config file from one of them) should solve this problem for you as well.

[noseratio]

@FredKSchott, thanks for looking into this! I did try the latest blank template.

I've now set up a repo to reproduce it, based on the result of npx create-snowpack-app proj --template @snowpack/app-template-blank.

My node is v14.13.0 and eslint is v7.10.0 (installed as a global package), if that matters.

On a side note, snowpack is awesome. Thanks for all the hard work!

[noseratio]

Submitted as an issue.

[FredKSchott]

This should be solved on master, will go out in the latest release! And thank you!

[noseratio]

Thank you for the quick fix for the super useful product overall!

[noseratio]

Those who may end up here googling, I eventually solved this problem with a custom plugin:
https://stackoverflow.com/a/64501702/1768303