１．minifyのinstall

# npm install -g uglify-js

added 1 package, and audited 2 packages in 7s

found 0 vulnerabilities
npm notice
npm notice New minor version of npm available! 8.3.1 -> 8.5.2
npm notice Changelog: https://github.com/npm/cli/releases/tag/v8.5.2
npm notice Run npm install -g npm@8.5.2 to update!
npm notice
# uglifyjs --version
uglify-js 3.15.2