Slate: Paste-HTML Example Produces Duplicate Text

[11]

Bug

Current Behavior

Pasting formatted text from a website into the Paste-HTML example duplicates the text that is pasted.
This happens on all types of text:

• Plain text
• Links
• Bold text
• Italicized text
• Code blocks
• Header tags
• Pre tags

The bug exists in the current Paste-HTML example -- https://www.slatejs.org/#/paste-html. I hope the Slate live demo can substitute for a JS Fiddle snippet

(sorry for the short gif, only had 30 secs to record - I was pasting from this wikipedia article if you want to try yourself. )

Expected Behavior

Pasting text from another website does not duplicate the text and keeps the formatting

[eshavrov]

Hello
Need to change the onPaste

  onPaste = (event, editor, next) => {
    event.preventDefault()  // <---- add me

    const transfer = getEventTransfer(event)
    if (transfer.type !== 'html') return next()
    const { document } = serializer.deserialize(transfer.html)
    editor.insertFragment(document)
  }