how to update angular compiler code example

Example 1: update angular cli globally

npm update @angular/cli -g

Example 2: update angular cli

npm uninstall -g @angular-cli
npm install -g @angular/cli@latest

Example 3: angular cli update

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      ng update @angular/cli @angular/core

Example 4: ng update @angular/core @angular/cli

rm -rf node_modules
npm uninstall --save-dev angular-cli
npm install --save-dev @angular/cli@latest
npm install