npm i typescript -g 에러

안녕하세요 npm i typescript -g 했는데 에러가 납니다

node 버전이 달라서 그런가요?

에러내용 :

PS D:\workspace\learn-typescript\getting-started> node -v

v14.17.4

PS D:\workspace\learn-typescript\getting-started>

PS D:\workspace\learn-typescript\getting-started>

PS D:\workspace\learn-typescript\getting-started>

PS D:\workspace\learn-typescript\getting-started> npm i typescript -g

npm ERR! code UNABLE_TO_VERIFY_LEAF_SIGNATURE

npm ERR! errno UNABLE_TO_VERIFY_LEAF_SIGNATURE

npm ERR! request to https://registry.npmjs.org/typescript failed, reason: unable to verify the first certificate

npm ERR! A complete log of this run can be found in:

npm ERR!     C:\Users\JBB\AppData\Roaming\npm-cache\_logs\2021-08-12T01_30_22_867Z-debug.log