JSFiddle - React, Tailwind, and code Playground

HTML

<meta id="m1" name="item1" content="Sample stuff:

  1. This text is multiline on purpose.
  2. And the author expects it to remain this way after compression.

  So yes, it does matter...">
  <meta id="m2" name="item2" content="Sample stuff: 1. This text is multiline on purpose. 2. And the author expects it to remain this way after compression. So yes, it does matter...">

JavaScript

alert('"'
      + document.getElementById('m1').content
      + '"\n\n---------------\n\n"'
      + document.getElementById('m2').content + '"'
);