Angular | Chunk asset optimisation - node.js

Question

This question is a duplicate of 92% chunk asset optimization - webpack
. But there was no satisfactory answer for this.
Actually, at local, I use ng serve or nmp start to start my service and it works fine. But at EC2 instance I need to compress my webpack, so I use ng build --aot --prod.
A week ago, everything was working fine but suddenly it started stuck at this line: 92% chunk asset optimization, I don't know what is going wrong.
That is below:
Your global Angular CLI version (6.0.3) is greater than your local
version (1.6.1). The local Angular CLI version is used.
To disable this warning use "ng config -g cli.warnings.versionMismatch false".
11% building modules 10/14 modules 4 active ...src/assets/css/smartadmin-rtl.min.cssNode#moveTo was deprecated. Use Container#append.
92% chunk asset optimization
The possible reason can be that I have developed and tested everything on npm-6.0.0 and I'm trying to deploy on npm-5.6.0.
But When I try to update it using npm i -g npm to update it shows:
/home/ubuntu/.npm-global/bin/npm -> /home/ubuntu/.npm-global/lib/node_modules/npm/bin/npm-cli.js
/home/ubuntu/.npm-global/bin/npx -> /home/ubuntu/.npm-global/lib/node_modules/npm/bin/npx-cli.js
/home/ubuntu/.npm-global/bin/update -> /home/ubuntu/.npm-global/lib/node_modules/update/bin/update.js
+ to#0.2.9
+ update#0.7.4
+ npm#6.1.0
updated 3 packages in 15.729s
and when I try to run sudo npm i -g npm to update it shows this:
npm ERR! code 1
npm ERR! Command failed: /usr/bin/git clone -g git://github.com/jonschlinkert/resolve-file.got /home/ubuntu/.npm/_cacache/tmp/git-clone-d9e6c8aa
npm ERR! /home/ubuntu/.npm/_cacache/tmp/git-clone-d9e6c8aa/.git: Permission denied
npm ERR!
npm ERR! A complete log of this run can be found in:
npm ERR! /home/ubuntu/.npm/_logs/2018-05-24T14_22_49_199Z-debug.log
I tried searching these error but no help.
Or the other issue can be:
Now my service has started using WebSocket in Angular, which was not there a week ago.
Please help me resolve this.

Answer 1

I had to remove all the angular dependencies from my machine and reinstall using:
sudo apt-get purge npm
sudo apt-get purge node
If above commands won't work then type:
sudo apt-get autoremove
sudo rm -rf /usr/local/bin/npm /usr/local/share/man/man1/node* /usr/local/lib/dtrace/node.d ~/.npm ~/.node-gyp /opt/local/bin/node opt/local/include/node /opt/local/lib/node_modules
sudo rm -rf /usr/local/lib/node*
sudo rm -rf /usr/local/include/node*
sudo rm -rf /usr/local/bin/node*Install NPM
sudo apt-get install npm
Install latest version of NODE
sudo npm cache clean -f
sudo npm install -g n
sudo n stable
Then install angular CLI using:
sudo npm install -g #angular/cli
And then run:
npm build --prod
And error got removed itself, things are working now.