vue cli 설치 error

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yun-aliui-MacBook-Pro:learn-vue-js-master yun-ali$ npm install -g @vue/cli

npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules

npm ERR! code EACCES

npm ERR! syscall access

npm ERR! path /usr/local/lib/node_modules

npm ERR! errno -13

npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'

npm ERR!  [Error: EACCES: permission denied, access '/usr/local/lib/node_modules'] {

npm ERR!   stack: "Error: EACCES: permission denied, access '/usr/local/lib/node_modules'",

npm ERR!   errno: -13,

npm ERR!   code: 'EACCES',

npm ERR!   syscall: 'access',

npm ERR!   path: '/usr/local/lib/node_modules'

npm ERR! }

npm ERR! 

npm ERR! The operation was rejected by your operating system.

npm ERR! It is likely you do not have the permissions to access this file as the current user

npm ERR! 

npm ERR! If you believe this might be a permissions issue, please double-check the

npm ERR! permissions of the file and its containing directories, or try running

npm ERR! the command again as root/Administrator.

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

npm ERR!     /Users/yun-ali/.npm/_logs/2020-01-28T07_36_11_027Z-debug.log

yun-aliui-MacBook-Pro:learn-vue-js-master yun-ali$ yarn global add @vue/cli

bash: yarn: command not found

yun-aliui-MacBook-Pro:learn-vue-js-master yun-ali$ npm install -g @vue/cli

npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules

npm ERR! code EACCES

npm ERR! syscall access

npm ERR! path /usr/local/lib/node_modules

npm ERR! errno -13

npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules'

npm ERR!  [Error: EACCES: permission denied, access '/usr/local/lib/node_modules'] {

npm ERR!   stack: "Error: EACCES: permission denied, access '/usr/local/lib/node_modules'",

npm ERR!   errno: -13,

npm ERR!   code: 'EACCES',

npm ERR!   syscall: 'access',

npm ERR!   path: '/usr/local/lib/node_modules'

npm ERR! }

npm ERR! 

npm ERR! The operation was rejected by your operating system.

npm ERR! It is likely you do not have the permissions to access this file as the current user

npm ERR! 

npm ERR! If you believe this might be a permissions issue, please double-check the

npm ERR! permissions of the file and its containing directories, or try running

npm ERR! the command again as root/Administrator.

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

npm ERR!     /Users/yun-ali/.npm/_logs/2020-01-28T07_39_49_648Z-debug.log

yun-aliui-MacBook-Pro:learn-vue-js-master yun-ali$