@koale/useworker is published to NPM without sourcemaps

[marklawlor]

[Required] Describe the bug

@koale/useworker generates sourcemaps during the build process appending the sourcemap sourceMappingURL comment to each file.

For example dist/index.mjs has the comment //# sourceMappingURL=index.mjs.map

However if you inspect the code published to NPM, it does not include the .map files https://www.npmjs.com/package/@koale/useworker?activeTab=code

This causes tools such as Webpack 5 to produce warnings as it tries to load the missing sourcemap file

Failed to parse source map from '/home/mark/project/node_modules/@koale/useworker/dist/index.mjs.map' file: Error
: ENOENT: no such file or directory, open '/home/mark/project/node_modules/@koale/useworker/dist/index.mjs.map'

If I clone the repo and run npm run build I can see that the .map files are generated. They are just not being published to NPM

[Required] Expected behavior

.map files are published to NPM