Solution: Authentication failed GitHub

Problem in GitHub desktop:

Authentication failed. You may not have permission to access the repository or the repository may have been archived. Open preferences and verify that you're signed in with an account that has permission to access this repository.

Solution: 

Delete from GitHub Desktop in the left menu the Repository, It presents a message

Then go to File/Clone Repository.

TypeScript problem installing and solution (Permissions) in MacOS High Sierra

Installing TypeScript MacOS

In Terminal:

npm install -g typescript

Error:

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
npm ERR! path /usr/local/lib/node_modules
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
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! Please try running this command again as root/Administrator.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/.npm/_logs/2018-05-23T00_50_41_390Z-debug.log

Solution:

sudo npm install -g typescript