title: Angular 9.1 - Javascript heap out of memory
body: <p><a href="https://i.stack.imgur.com/g6vAo.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/g6vAo.jpg" alt="enter image description here"></a></p>
  
  <p>Below screen shot shows CPU usage
  <a href="https://i.stack.imgur.com/5oiVW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5oiVW.png" alt="enter image description here"></a></p>
  
  <p>Below is package.json file
  <a href="https://i.stack.imgur.com/da6FH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/da6FH.png" alt="enter image description here"></a></p>
  
  <p>Targeted only ES2015 in tsconfig.json.
  Tried doing ng build --prod-- source-map=false but did not worked</p>