[hadoop@hadoop000 source]$ cd user-charts/
[hadoop@hadoop000 user-charts]$ ls
mock package.json package-lock.json src tsconfig.json typings.d.ts
[hadoop@hadoop000 user-charts]$ sudo npm i yarn -g
npm WARN lifecycle yarn@1.22.18~preinstall: cannot run in wd %s %s (wd=%s) yarn@1.22.18 :; (node ./preinstall.js > /dev/null 2>&1 || true) /usr/lib/node_modules/.staging/yarn-c6781dde
/usr/bin/yarn -> /usr/lib/node_modules/yarn/bin/yarn.js
/usr/bin/yarnpkg -> /usr/lib/node_modules/yarn/bin/yarn.js
/usr/lib
└── yarn@1.22.18

[hadoop@hadoop000 user-charts]$