Alternative package for React Mounter

Currently i am using react-mounter package with FlowRouter in my project for layout management (Meteor suggested method), Recently i have updated my react version from 16 to 17 and now it showing some peer dependency warnings related to react-mounter package.
also the react-mounter package looks like deprecated.
is it safe to continue using react-mounter package?
any other alternative packages for react-mounter?
Thanks in advance.