eslint error : Cannot find any-observable implementation nor global.Observable

It seems Listr depends on RxJS, and because it hasn't been updated to support RxJS 6, a compatibility package rxjs-compat is required. Once this package is installed, the issue goes away.

see https://github.com/okonet/lint-staged/issues/416

so, just install the dependency

npm install rxjs-compat

I had a similar issue. I deleted the package-lock.json and the node-modules folder, run npm install and everything was fixed.