Sourcemap references missing source files

[baraknaveh]

When using Vitest, I get warnings like:

Sourcemap for "mypath/node_modules/.pnpm/superjson@2.2.6/node_modules/superjson/dist/index.js" points to missing source files

The published sourcemap references source files that aren't included in the package.

Suggested fix: Enable inlineSources in tsconfig.json to embed the source content directly in the .map files:

{
  "compilerOptions": {
    "sourceMap": true,
    "inlineSources": true
  }
}

This resolves the warnings without adding extra files to the package.

[Skn0tt]

Hmm, why are we emitting sourcemaps in the first place? No need for that in a library like ours. @copilot please disable sourcemaps.