Dependency tree error from npm / chai

[intel352]

During install, receive dependency error:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/chai
npm ERR!   dev chai@"^3.5.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer chai@">= 1.6.1 < 2" from [email protected]
npm ERR! node_modules/chai-fs
npm ERR!   dev chai-fs@"^0.1.0" from the root project
npm ERR!
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.