feat: add defaultBlockAt helper

packages/core/src/helpers/defaultBlockAt.ts

@@ -0,0 +1,13 @@
+import { ContentMatch, NodeType } from 'prosemirror-model'
+
+export default function defaultBlockAt(match: ContentMatch): NodeType | null {
+  for (let i = 0; i < match.edgeCount; i += 1) {
+    const { type } = match.edge(i)
+
+    if (type.isTextblock && !type.hasRequiredAttrs()) {
+      return type
+    }
+  }
+
+  return null
+}

packages/core/src/index.ts

@@ -23,6 +23,7 @@ export { default as textPasteRule } from './pasteRules/textPasteRule'
 export { default as callOrReturn } from './utilities/callOrReturn'
 export { default as mergeAttributes } from './utilities/mergeAttributes'
 
+export { default as defaultBlockAt } from './helpers/defaultBlockAt'
 export { default as getExtensionField } from './helpers/getExtensionField'
 export { default as findChildren } from './helpers/findChildren'
 export { default as findChildrenInRange } from './helpers/findChildrenInRange'