i am using ionic by Visual Studio Code on Mac .
i save my file and start process “ionic serve” or “ionic build: android”.
Then it shows message that "update Ionic CLI - in stall in ? Y/n "
i press the Y , but it happens nothing.
how to install or update ionic CLI on visual studio code.
where do i press Y ?
Thanks.
You could update it outside visual code too
Open a terminal and run
npm install -g ionic
this will install a/update the global ionic cli
then, once located in your project root, run
npm install ionic --save-dev
this will install the last ionic cli in your project as a dev dependency (should modify your package.json and package-lock.json)
Thank you for answering my question .
it Works !!! 
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