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Solution - mac - npm - android-build-tools - missing write access to /usr/local/lib/node_modules

You may get the following error when installing the android-build-tools with npm install android-build-tools -g:

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:
npm ERR!    '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! 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 (though this is not recommended).
...

To install without using sudo, change your npm global directory to a directory within your user folder:

https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally#reinstall-npm-with-a-node-version-manager

*you may not need step 5.
*you may need to use --force when changing/updating .unoconfigs, like so: node_modules/.bin/uno build -t=android --force

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