Subpath patterns are not supported

[sybereal]

Subpath patterns, as documented here, allow specifying patterns of files that can be imported in other packages. This is especially useful for packaging TypeScript. The exports object could look like this, for example:

{
  "./*.js": {
    "types": "out/*.d.ts",
    "import": "out/*.js"
    }
}

If I import foo/bar.js in a package depending on this one, TypeScript will correctly look up the type information in out/bar.d.ts. esbuild, however, fails to resolve the import and exits with a message along the lines of "foo/bar.js" is not exported.

I've created a hopefully understandable minimal reproduction of this issue at https://github.com/sybereal/esbuild-export-pattern-repro.

[evanw]

I think this issue is a request for this feature: nodejs/node#39635. That PR changed node's path resolution algorithm after esbuild implemented it, and esbuild's implementation now needs to be updated.

[sybereal]

Thank you for the amazingly quick resolution, much appreciated. esbuild has been a pleasure to work with.