Ionic-cli: bug: ionic global install warning

[ionitron-bot[bot]]

_Original issue by @MrBokeh on 2019-07-29T14:21:06Z_

Bug Report

Ionic version:
[x] 4.x

Current behavior:
NPM install ionic globally:

npm i -g ionic

npm WARN deprecated [email protected]: Please note that v5.0.1+ of superagent removes User-Agent header by default, therefore you may need to add it yourself (e.g. GitHub blocks requests without a User-Agent header).  This notice will go away with v5.0.2+ once it is released.
/usr/local/bin/ionic -> /usr/local/lib/node_modules/ionic/bin/ionic
+ [email protected]

Expected behavior:
No warning?

Steps to reproduce:
npm i -g ionic

Related code:

insert short code snippets here

Other information:

Ionic info:

insert the output from ionic info here

[tanjunior]

Getting this warning too with fresh install of nodejs and ionic

Steps to Reproduce:
npm i -g ionic

Output:
npm WARN deprecated [email protected]: Please note that v5.0.1+ of superagent removes User-Agent header by default, therefore you may need to add it yourself (e.g. GitHub blocks requests without a User-Agent header). This notice will go away with v5.0.2+ once it is released.

My ionic info:

Ionic:

   Ionic CLI : 5.2.5

Utility:

   cordova-res : not installed
   native-run  : not installed

System:

   NodeJS : v10.16.3
   npm    : 6.10.3
   OS     : Windows 10

Other Information:
npm view superagent version returns version 5.1.0

[imhoffd]

This warning is okay. The older version of superagent works very well. If you're curious, the PR to update it is here: https://github.com/ionic-team/ionic-cli/pull/4034

[sanjay-devappsys]

okay, the problem is not with ionic.
Here's a fix I came up with. First clear the cache from npm.
npm cache clean --force
after that run
npm install -g ionic
if you're on mac include sudo.