Some cases will be ignore

[NE-SmallTown]

The safe resolve seems not accurate, because something like @babel/xxx will not be treated as external.

I find that your comment said there is another plugin which could do this(I haven't test it for now), but I think maybe this is not a good way, from my personal perspective we should put that into this repo because this is its own responsibility to do this.

[elado]

Try https://github.com/Septh/rollup-plugin-node-externals

[NE-SmallTown]

@elado I tried but seems that still doesn't work, unlike this repo just ignore the @babel/xxx, the plugin you mentioned ignore all except peerDependencies

[PredokMiF]

rollup-plugin-node-externals worked for me