When running npm start the build fails with:

ERROR in ./src/components/fetch-wrapper.jsx

/path/to/react-file-viewer/src/components/fetch-wrapper.jsx
  31:5  error  render should be placed after abort  react/sort-comp

✖ 1 problem (1 error, 0 warnings)

By changing the order as suggested the error seems to be resolved.

You mention a CLA in the contributing guidelines. However it's not clear how to submit this. I can't find any bot, that could fail to recognize it.