• Rollup Version: ^2.26.4
• Operating System (or Browser): Ubuntu 1804
• Node Version (if applicable): 10.19.0
• Link to reproduction (IMPORTANT, read below): https://repl.it/repls/KindlyHospitableDataset

Expected Behavior

The emitted lib folder should look like this:

• main.js
• HelloWorld.vue_rollup-plugin....js
• HelloWorld.vue.js

Actual Behavior

The emitted lib folder looks like this:

• node_modules/
• src
  • HelloWorld.vue_rollup-plugin....js
  • HelloWorld.vue.js
• main.js

The plugins resolve and commonjs do nothing to remedy this, also adding those libraries added to node_modules to externals does nothing.

Additional

In a monorepo, all the files within lib are also under the path the monorepo is under, i.e. if the package is in /my-project/packages/my-package, the output will look like this. /my-project/packages/my-package/lib/package/my-package/main.js