The following lint issues had to be disabled in order to maintain long backward compatibility to React 16.0:

• react/no-find-dom-node: Suggested solution is to use callback refs.
• react/no-render-return-value: See deprecation warning. Suggested solution is to use callback refs.
• react/no-string-refs: Suggested solution is to use callback refs.

TL/DR: Using callback refs should clear all these up.

Sooner or later, however, these issues will have to be rectified in order for the code to be compatible with the next major release of React, at which point, we'll have to drop support for < React 16.3 which is when React.createRef() and callback refs were introduced (AFAICT).