Published package ships sourcemaps referencing missing source files

[StephenTangCook]

Problem

The published npm package includes dist/*.js.map files whose sources entries reference TypeScript source files (e.g. ../src/*.ts) that are not included in the published package.

This causes warnings at runtime in environments that parse sourcemaps (e.g. workerd / Cloudflare Workers vitest integration tests):

Sourcemap for ".../node_modules/slack-cloudflare-workers/dist/index.js" points to missing source files

Expected behavior

Either:

1. Include the src/ directory in the published package so the sourcemap references resolve, or
2. Embed sources inline via sourcesContent in the .map files, or
3. Don't ship .map files if the sources aren't available

Environment

• slack-cloudflare-workers@1.3.9
• workerd (via @cloudflare/vitest-pool-workers)