feat(utils): add getBlockEndPoint

packages/editor/src/utils/index.ts

@@ -4,6 +4,7 @@ export {
   blockOffsetToSpanSelectionPoint,
   spanSelectionPointToBlockOffset,
 } from './util.block-offset'
+export {getBlockEndPoint} from './util.get-block-end-point'
 export {getBlockStartPoint} from './util.get-block-start-point'
 export {getTextBlockText} from './util.get-text-block-text'
 export {isEmptyTextBlock} from './util.is-empty-text-block'

packages/editor/src/utils/util.get-block-end-point.ts

@@ -0,0 +1,34 @@
+import {
+  isPortableTextSpan,
+  isPortableTextTextBlock,
+  type KeyedSegment,
+  type PortableTextBlock,
+} from '@sanity/types'
+import type {EditorSelectionPoint} from '../types/editor'
+
+/**
+ * @public
+ */
+export function getBlockEndPoint({
+  node,
+  path,
+}: {
+  node: PortableTextBlock
+  path: [KeyedSegment]
+}): EditorSelectionPoint {
+  if (isPortableTextTextBlock(node)) {
+    const lastChild = node.children[node.children.length - 1]
+
+    if (lastChild) {
+      return {
+        path: [...path, 'children', {_key: lastChild._key}],
+        offset: isPortableTextSpan(lastChild) ? lastChild.text.length : 0,
+      }
+    }
+  }
+
+  return {
+    path,
+    offset: 0,
+  }
+}