Global installs (sudo npm i -g) fail on Mac after 6.5 upgrade. Works fine after 6.4.1 downgrade.

What I Wanted to Do Install a global package using sudo npm -g on my Mac running NPM 6.5 What Happened Instead Every global install failed. Errors included many like this: WARN tar EISDIR: illegal operation on a directory, open '/usr/local/lib/node_modules/.staging/npm-3e479054/node_modules/wide…