babel-plugin-redux-saga produces error on startup

Steps to reproduce

Unknown

Description of the bug/issue

Error after upgrading babel-plugin-redux-saga which seems not to be affected by any change in Babel versions.

ERROR in ./app/main.dev.js Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Unexpected falsy value: undefined at createDescriptor (/home/me/Documents/projects/MyProject/node_modules/@babel/core/src/config/config-descriptors.ts:337:11) at createDescriptor.next () at step (/home/me/Documents/projects/MyProject/node_modules/gensync/index.js:261:32) at /home/me/Documents/projects/MyProject/node_modules/gensync/index.js:273:13 at async.call.result.err.err (/home/me/Documents/projects/MyProject/node_modules/gensync/index.js:223:11)

Steps to reproduce the bug/issue

1. Unknown exactly, but upgrade babel-plugin-redux-saga from ~1.1.3 to ~1.2.0 ...

Example

Unknown how to repro

Actual results

The Expected results

App still runs as it did with 1.1.x

Environment information