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Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.10.0#962

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Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.10.0#962
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@renovate renovate bot commented Apr 1, 2025

This PR contains the following updates:

Package Change Age Confidence
org.jetbrains.kotlinx:kotlinx-serialization-json 1.8.01.10.0 age confidence

Release Notes

Kotlin/kotlinx.serialization (org.jetbrains.kotlinx:kotlinx-serialization-json)

v1.10.0

==================

This release is based on Kotlin 2.3.0 and contains all of the changes from 1.10.0-RC.
The only additional change is a fix for ProtoBuf packing of Kotlin unsigned types (#​3079).
Big thanks to KosmX for contributing the fix.

For your convenience, the changelog for 1.10.0-RC is duplicated below:

Stabilization of APIs

kotlinx-serialization 1.10 and subsequent releases will be focused on stabilization of existing APIs.
The following APIs and configuration options are no longer experimental because they're widely used without any known major issues:

  • Json configuration options: decodeEnumsCaseInsensitive, allowTrailingComma, allowComments, and prettyPrintIndent. (#​3100)
  • @EncodeDefault annotation and its modes. (#​3106)
  • JsonUnquotedLiteral constructor function (#​2900)
  • JsonPrimitive constructor function overloads that accept unsigned types. (#​3117)
  • JSON DSL functions on JsonElement with Nothing? overloads. (#​3117)

Readiness for return value checker

Kotlin 2.3.0 introduces a new feature aimed
at helping you to catch bugs related to the accidentally ignored return value of the function.
kotlinx-serialization 1.10.0-RC code is fully marked for this feature, meaning that you
can get warnings for unused function calls like Json.encodeToString(...).
To get the warnings, the feature has to be enabled in your project as described here.

Polymorphism improvements

Polymorphic serialization received a couple of improvements in this release:

New subclassesOfSealed utility to automatically register sealed subclasses serializers in polymorphic modules (#​2201).
Use it in your SerializersModule when configuring a polymorphic hierarchy which contains both abstract and sealed classes.
For example, when root of your hierarchy is an interface, but most of your inheritors are sealed classes.
The new function will register all known sealed subclasses for you, so you don’t need to list them one by one.
This makes writing your SerializerModules much faster and simpler.
Big thanks to Paul de Vrieze for contributing this feature.

Class discriminator conflict check rework (#​3105).
If a payload already contains a property with the same name as the configured discriminator (for example, type),
it is called a class discriminator conflict.
To produce a correct output and allow more inputs to be deserialized at the same time, the following changes were made:

  • Conflicts introduced by JsonNamingStrategy transformations are now detected during serialization as well and will cause SerializationException.
    It also affects non-polymorphic classes.
  • Conflicts from ClassDisciminatorMode.ALL_JSON_OBJECTS and SerializersModuleBuilder.polymorphicDefaultSerializer are also detected.
  • It is allowed to deserialize such a conflicting key for both sealed and open polymorphic hierarchies.
    Previously, it was possible in the sealed hierarchies alone due to missing assertion. See #​1664 for details.

General improvements

  • Add .serialName to MissingFieldException for clearer diagnostics. (#​3114)
  • Generate unique Automatic-Module-Name entries for metadata JARs. (#​3109)
  • Revised ProGuard rules and added R8 tests. (#​3041)
  • CBOR: Improved error message when a byte string/array type mismatch is encountered. (#​3052)

Bugfixes

  • Fix the type in the BIGNUM_NEGATIVE tag name. (#​3090)
  • CBOR: Fix various bugs in the decoder implementation to be more strict and consistent with the specification.

v1.9.0

==================

This release updates Kotlin version to 2.2.0, includes several bugfixes and provides serializers for kotlin.time.Instant.

Add kotlin.time.Instant serializers

Instant class was moved from kotlinx-datetime library to Kotlin standard library.
As a result, kotlinx-datetime 0.7.0 no longer has serializers for the Instant class.
To use new kotlin.time.Instant class in your @​Serializable classes,
you can use this 1.9.0 kotlinx-serialization version (Kotlin 2.2 is required).
You can choose between default InstantSerializer which uses its string representation,
or specify InstantComponentSerializer that represents instant as its components.
See details in the PR.

Other bugfixes

  • Fix resize in JsonPath (#​2995)
  • Fixed proguard rules for obfuscation to work correctly (#​2983)

v1.8.1

==================

This release updates Kotlin version to 2.1.20, while also providing several important improvements
and bugfixes.

Improvements

Bugfixes

  • Fix incorrect enum coercion during deserialization from JsonElement (#​2962)
  • Supply proper equals(), hashCode(), and toString() for SerialDescriptor() wrapper (#​2942)
  • Do not encode empty packed collections in protobuf (#​2907)

Configuration

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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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This PR was generated by Mend Renovate. View the repository job log.

@renovate renovate bot changed the title Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.8.1 chore(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.8.1 Jun 15, 2025
@renovate renovate bot changed the title chore(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.8.1 chore(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Jun 27, 2025
@renovate renovate bot force-pushed the renovate/org.jetbrains.kotlinx-kotlinx-serialization-json-1.x branch from 905017e to 4899a38 Compare June 27, 2025 15:53
@renovate renovate bot changed the title chore(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Jul 10, 2025
@renovate renovate bot changed the title Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 chore(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Aug 6, 2025
@renovate renovate bot changed the title chore(deps): update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Aug 11, 2025
@renovate renovate bot force-pushed the renovate/org.jetbrains.kotlinx-kotlinx-serialization-json-1.x branch from 4899a38 to 83aaf61 Compare October 20, 2025 15:24
@renovate renovate bot force-pushed the renovate/org.jetbrains.kotlinx-kotlinx-serialization-json-1.x branch from 83aaf61 to 50018ae Compare December 15, 2025 17:38
@renovate renovate bot changed the title Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.9.0 Update dependency org.jetbrains.kotlinx:kotlinx-serialization-json to v1.10.0 Jan 21, 2026
@renovate renovate bot force-pushed the renovate/org.jetbrains.kotlinx-kotlinx-serialization-json-1.x branch from 50018ae to 32be275 Compare January 21, 2026 17:51
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