Momento/memento-note/lib/editor/smart-paste-extension.ts

import { Extension } from '@tiptap/core'
import type { EditorView } from '@tiptap/pm/view'
import { Plugin, PluginKey } from '@tiptap/pm/state'

export type SmartPasteHandler = (view: EditorView, event: ClipboardEvent) => boolean

export const smartPastePluginKey = new PluginKey('smartPaste')

declare module '@tiptap/core' {
  interface Storage {
    smartPaste: {
      onPaste: SmartPasteHandler | null
    }
  }
}

export const SmartPasteExtension = Extension.create({
  name: 'smartPaste',

  addStorage() {
    return {
      onPaste: null as SmartPasteHandler | null,
    }
  },

  addProseMirrorPlugins() {
    const storage = this.storage
    return [
      new Plugin({
        key: smartPastePluginKey,
        props: {
          handlePaste(view, event) {
            return storage.onPaste?.(view, event) ?? false
          },
        },
      }),
    ]
  },
})