@portabletext/block-tools/src/HtmlDeserializer/preprocessors/index.ts

Can format HTML, Slate JSON or Sanity block array into any other format.

import preprocessGDocs from './gdocs'
import preprocessHTML from './html'
import preprocessNotion from './notion'
import preprocessWhitespace from './whitespace'
import preprocessWord from './word'

export default [
  preprocessWhitespace,
  preprocessNotion,
  preprocessWord,
  preprocessGDocs,
  preprocessHTML,
]