Errors when importing external ES6 module as well as internal module (webpack resolver)

There seems to be a strange issue with eslint-import-resolver-webpack where when importing an internal module (webpack resolve alias) in conjunction with an external ES6 module (not transpiled).

import { get } from 'lodash-es'; // external es6 module
import Thing from 'app/components/Thing'; // internal module
import anotherThing from './relative/path'; // relative path

When this occurs, there are a bunch of errors on the lodash-es import complaining: Resolve error: Unexpected reserved word.
The internal module also has an error complaining that 'app' should be listed in the project's dependencies.

Removing either the external es6 module or the internal module fixes both of these errors, however.

Reproduce the issue with the shown lodash-es, webpack alias, and relative imports using eslint-import-resolver-webpack. Trace why resolving the external ES6 module triggers both the reserved-word and dependency errors; done means all three imports resolve without either error.