How I can remove class attribute?

[Nick Artemov]

input:

<style>
  .d {
    color:red
  }
</style>
<div class='d'>123</div>

output:

<div class="d" style="color: red;">123</div>

How I can remove class attribute? class="d"

[Jarrett Widman]

consider using https://www.npmjs.com/package/declassify which was created for everyone asking a similar question on this repo