Invalid source maps

[benmccann]

Reproduce with:

npm install blurhash
cat node_modules/blurhash/dist/index.js.map

The source map points at a file that does not exist:

"sources":["../src/index.ts"]

As a result, this library cannot be used with Vite which tries to load source maps when the server is started so that it can transform them when it transforms code in the library:

08:57:06 [vite] Internal server error: ENOENT: no such file or directory, open 'node_modules/blurhash/src/index.ts'