npm i reports vulnerabilities in dependencies.

[mbghsource]

added 1587 packages from 844 contributors in 94.943s
[!] 9 vulnerabilities found [33146 packages audited]
Severity: 9 moderate
Run npm audit for more detail

$ npm audit

                   === npm audit security report ===                        

# Run npm install image-webpack-loader@4.2.0 to resolve 9 vulnerabilities
SEMVER WARNING: Recommended action is a potentially breaking change