add toggleMark command

packages/core/src/commands/toggleMark.ts

@@ -0,0 +1,20 @@
+import { Editor } from '../Editor'
+import { toggleMark } from 'prosemirror-commands'
+import { MarkType } from 'prosemirror-model'
+import getMarkType from '../utils/getMarkType'
+
+type ToggleMark = (type: string | MarkType) => any
+
+declare module '../Editor' {
+  interface Editor {
+    toggleMark: ToggleMark,
+  }
+}
+
+export default (next: Function, editor: Editor): ToggleMark => (typeOrName) => {
+  const { view, state, schema } = editor
+  const type = getMarkType(typeOrName, schema)
+
+  toggleMark(type)(state, view.dispatch)
+  next()
+}