import { imageUploader } from 'prosemirror-image-uploader'

EditorState.create({
  plugins: [
    imageUploader({
      async upload(fileOrUrl: File | string, view: EditorView) {

        let url: string /// await uploadFileOrUrlToServerAndObtainUrl()

        return url
      }
    })
  ]
})

{
  image: {
    attrs: {
      src: {},
      alt: { default: null },
      title: { default: null },
      uploadId: { default: null }, /// added
      error: { default: null }   /// added
    },
    parseDOM: [{tag: 'img[src]', getAttrs(dom) {
      return {
        src: dom.getAttribute('src'),
        title: dom.getAttribute('title'),
        alt: dom.getAttribute('alt'),
        uploadId: dom.getAttribute('uploadId'), /// added
        error: dom.getAttribute('error') /// added
      }
    }}],
    toDOM(node) { 
      let { src, alt, title, uploadId, error } = node.attrs;  /// updated
      return ['img', { src, alt, title, uploadId, error }] /// updated
    }
  },
}