add hardbreak extension

packages/extension-hardbreak/index.ts

@@ -0,0 +1,38 @@
+import { Node } from '@tiptap/core'
+import { chainCommands, exitCode } from 'prosemirror-commands'
+
+declare module '@tiptap/core/src/Editor' {
+  interface Editor {
+    hardbreak(): Editor,
+  }
+}
+
+export default new Node()
+  .name('hardbreak')
+  .schema(() => ({
+    inline: true,
+    group: 'inline',
+    selectable: false,
+    parseDOM: [
+      { tag: 'br' },
+    ],
+    toDOM: () => ['br'],
+  }))
+  .commands(({ editor, type }) => ({
+    hardbreak: next => () => {
+      const { state, view } = editor
+      const { dispatch } = view
+
+      chainCommands(exitCode, () => {
+        dispatch(state.tr.replaceSelectionWith(type.create()).scrollIntoView())
+        return true
+      })(state, dispatch, view)
+
+      next()
+    },
+  }))
+  .keys(({ editor }) => ({
+    'Mod-Enter': () => editor.hardbreak(),
+    'Shift-Enter': () => editor.hardbreak(),
+  }))
+  .create()