Broken package.json main/module/exports configuration and types

[smellyshovel]

New Vite 6 with (TS 5+) setups give the following error:

There are types at '//node_modules/@placemarkio/polyline/dist/index.d.ts', but this result could not be resolved when respecting package.json "exports". The '@placemarkio/polyline' library may need to update its package.json or typings.

Here's what Vite's docs say:

Recommended package.json for your lib:

{
  "name": "my-lib",
  "type": "module",
  "files": ["dist"],
  "main": "./dist/my-lib.umd.cjs",
  "module": "./dist/my-lib.js",
  "exports": {
    ".": {
      "import": "./dist/my-lib.js",
      "require": "./dist/my-lib.umd.cjs"
    }
  }
}

Also, the package incorrectly specifies types, so that consumer projects must manually do the following:

	"compilerOptions": {
		"paths": {
			"@placemarkio/polyline": ["/node_modules/@placemarkio/polyline/dist/index.d.ts"]
		}
	}

Expected behavior: importing the plugin should work out of the box with newer environments. Type declarations should also be imported automatically.

[tmcw]

I'd be more than happy to accept a PR with a fix. Package.json entry points have been a moving target.