Compatible version of file-saver for angular6 + rsjx6.0.0 ?

Question

I am working on Angular6 with web api Core. An Excel file which is available in wwwroot folder of webApi, I have to download it. I directly use 'npm install file-saver -- save' command to install file-saver but after installing I am getting error on import rsjx where I already used. So which version of file-saver should I use so that I could not get the problem. Please help me. Thanks,