reduce size of node_modules for production

I created node_modules for uploading addon to online site from localhost with help of ngrok and using npm install in CommandPrompt. But the created node_modules folder size was 78mb. In that case i must reduce the size by removing the unwanted folders, so I surfed the internet and got two suggestions, as it could be efficient to get size reduced, they are: using --production mode and the other is using shrinkwrap.

As first step I used the command npm install --production and npm install --only=production as specified here : How do you prevent install of "devDependencies" NPM modules for Node.js (package.json)?, but I din't see any change in folder size.

Then referred on how to use shrinkwrap to reduce size as given in this site and tried it : https://docs.npmjs.com/cli/shrinkwrap, but it did not success.

Additionally I referred here : https://www.npmjs.com/package/modclean, where using the command modclean -n default:safe I got 10-11mb reduced.

But, still I have a large number of unwanted folders in node_modules. I have specified few needed dependencies in package.json as follows,

"dependencies": {

"atlassian-connect-express": "2.0.0",
"body-parser": "^1.14.2",
"compression": "^1.6.0",
"cookie-parser": "^1.4.0",
"errorhandler": "^1.4.2",
"express": "^4.13.3",
"express-hbs": "*",
"jugglingdb-sqlite3": "0.0.5",
"morgan": "^1.6.1",
"static-expiry": ">=0.0.5"  

}

The dependencies I have given in package.json is few, but I see a large sets of folders created in node_modules. How can I reduce the size of node_modules, is there any other process?

via Hari Prasath