Slate: HTML content being pasted twice

[moinism]

Do you want to request a _feature_ or report a _bug_?

Bug

What's the current behavior?

When HTML content is pasted, it is pasting it twice.

1. Copy some content from a webpage, even a line.
2. https://www.slatejs.org/#/paste-html
3. Paste.

What's the expected behavior?

Paste only once.

[CameronAckermanSEL]

As far as I can tell, the defect is that the onPaste handler is firing a second time with a plain text paste as if return next() was being called to resume the plugin stack after the html is deserialized and inserted
https://jsfiddle.net/1nzto9vd/1/

[larrywu13535]

Pasting also doesn't respect line breaks

[CameronAckermanSEL]

That's probably related to how insert fragment works

[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)
  }

link