Adds `doc.isEmpty` check to `Document._loadDocument(Delta doc)`

5 years ago · e12a843692
parent 7cdbdd9a6a
commit e12a843692
1 changed files with 5 additions and 0 deletions
--- a/lib/models/documents/document.dart
+++ b/lib/models/documents/document.dart
@ -223,7 +223,12 @@ class Document {
  String toPlainText() => _root.children.map((e) => e.toPlainText()).join();

  void _loadDocument(Delta doc) {
+    if (doc.isEmpty) {
+      throw ArgumentError.value(doc, 'Document Delta cannot be empty.');
+    }
+
    assert((doc.last.data as String).endsWith('\n'));
+
    var offset = 0;
    for (final op in doc.toList()) {
      if (!op.isInsert) {