Issues

• 6.15.0: duplicate fromJson key detection is a breaking change, not marked in CHANGELOG

  google/json_serializable.dart#1622 · Filter by author qeepcologne opened on Oct 20, 2026

• JSON schema generated does not support unions or custom codecs

  google/json_serializable.dart#1596 · Filter by author jpeiffer opened on Oct 13, 2026

• Generic JsonConverter<T> is not applied to List<T> fields

  google/json_serializable.dart#1589 · Filter by author PrashantRanpura opened on Aug 12, 2026

• Allow default value encoded as JSON or as the default constructor

  google/json_serializable.dart#1575 · Filter by author TheCarpetMerchant opened on May 20, 2026

• toJson and fromJson work differently with nested objects

  google/json_serializable.dart#1573 · Filter by author CarmeloBeeapp opened on May 7, 2026

• Unable to skip empty List when serializing JSON with JsonConverter

  google/json_serializable.dart#1569 · Filter by author NoBrainer opened on Apr 26, 2026

• Support nullable fromJson

  google/json_serializable.dart#1560 · Filter by author TekExplorer opened on Feb 17, 2026

• Generate Type-Safe Field Name Accessors

  google/json_serializable.dart#1543 · Filter by author BirjuVachhani opened on Jan 15, 2026
  5

• Add breadcrumbs to CheckedFromJsonException

  google/json_serializable.dart#1541 · Filter by author Rofl113 opened on Jan 12, 2026

• [Suggestion] Rework Enum management

  google/json_serializable.dart#1538 · Filter by author EArminjon opened on Dec 15, 2025
  2

• Support configurable line length (page width) for generated files

  State: blocked
  google/json_serializable.dart#1530 · Filter by author yashj6294 opened on Oct 15, 2025
  1

• No code generated when using modified fromJson factory

  google/json_serializable.dart#1528 · Filter by author kuchienkz opened on Sep 22, 2025
  1

• pub.dev entry is missing "Web" as supported platform

  google/json_serializable.dart#1526 · Filter by author mschmidm opened on Sep 9, 2025
  2

• The page_width option in the analysis_options.yaml is ignored

  google/json_serializable.dart#1518 · Filter by author koji-1009 opened on Aug 16, 2025
  1

• Unnecessary use of a null check ('!') on enum values.

  google/json_serializable.dart#1515 · Filter by author isoos opened on Aug 9, 2025
  2

• [bug] json_serializable is unable to recognize generics on @JsonKey's toJson/fromJson methods, or on JsonConverter

  google/json_serializable.dart#1508 · Filter by author lucavenir opened on Jul 7, 2025
  1

• [bug] json_serializable is unable to handle enum with generics

  google/json_serializable.dart#1507 · Filter by author lucavenir opened on Jul 7, 2025

• Add lean_builder support

  google/json_serializable.dart#1503 · Filter by author xVemu opened on Jun 10, 2025
  1

• Provide some means to generate from/toJson for compatible types for other code generators

  Type: enhancement
  google/json_serializable.dart#1496 · Filter by author TekExplorer opened on Jun 1, 2025
  4

• Feature Request "Expected" Annotation

  google/json_serializable.dart#1490 · Filter by author YukiAttano opened on Apr 24, 2025

• Build Failure with Dart Test's Tags Annotation

  google/json_serializable.dart#1480 · Filter by author PvtPuddles opened on Feb 24, 2025

• Support collection ValueNotifier

  google/json_serializable.dart#1468 · Filter by author subzero911 opened on Dec 24, 2024

• support @JsonEnum(valueField "index", indexOffset: 100)

  google/json_serializable.dart#1464 · Filter by author RelicOfTesla opened on Dec 17, 2024

• Issue with Parsing Nested JSON Fields with the Same Key Name in

  google/json_serializable.dart#1463 · Filter by author AntoniPochopien opened on Dec 13, 2024

• Add regular converter for UnmodifiableListView

  google/json_serializable.dart#1454 · Filter by author abikko opened on Nov 1, 2024