crates.io · #845 most downloaded on crates.io

flatbuffers

25.12.19108M downloads/mogoogle/flatbuffers ↗New releases in your daily digest, changelog included.

Official FlatBuffers Rust runtime library.

Last release 9 months ago
19 Dec 2025
Release timing varies
gaps range from 2 weeks to 10 months
Some releases are documented
notes for 10 of 27 stable releases
6 versions withdrawn
withdrawn after publishing
10 years old
33 releases · first in 2016

Release timeline

33 releases since 2016

2016201820202022

Releases

25.12.1919 Dec 2025Deprecated
Deprecate --ts-flat-files and --ts-entry-points by @jtdavis777 in #8831
What's Changed

docs: clean up whitespace and fix typo in tutorial.md by @daynual in #8695

Correct span and non-span versions of ToArray() and ToArrayPadded() methods by @vsmcea in #8734

[Swift] Fixes test failing on macOS when using URL(fileURLWithPath:isDirectory) by @mustiikhalil in #8742

treat npm_typescript as a dev dependency by @dws in #8719

[Dart] Fix union unpacking by @jakobkordez in #8748

[Dart] Fix struct vector ordering in pack function by @jakobkordez in #8747

Add conditional check by @coder7695 in #8736

[Dart] Refactor lazy list unpacking by @jakobkordez in #8746

Prevent make_span from working with vectors and arrays of pointers by @are-you-tilted-already in #8735

Swap the dependency of CreateX and X::Pack object API functions. by @cosmith-nvidia in #8754

[Swift] Implements FlatbuffersVector which confirms to RandomAccessCollection by @mustiikhalil in #8752

Fix --gen-compare to not generate comparators for native types. by @cosmith-nvidia in #8681

Support native_type for tables when using the C++ object API. by @cosmith-nvidia in #8668

[Swift] Improves the performance creating strings by @mustiikhalil in #8772

[Docs] Update swift supported features by @mustiikhalil in #8769

[Swift] Bump minimum supported version of swift to 5.10 by @mustiikhalil in #8758

[Swift] Inline arrays by @mustiikhalil in #8755

Replace usage of make_unique with unique_ptr for cpp11 by @fliiiix in #8763

Fix Issue #8653 - Python vtables not considering object size by @jtdavis777 in #8683

[C++] Add Vector64 specialization for std::vector<bool> by @jtdavis777 in #8757

Stop calling setup.py in release CI by @jtdavis777 in #8771

[lua] Dont' crash on a fbs file with no root table by @jtdavis777 in #8770

Revival of GH-8285: fix: remove a single type hint to retain python 2.7.x compatibility by @jtdavis777 in #8799

[Python] Add unit test for github issue 8653 by @satur9nine in #8786

Size verifier fix 2 by @fergushenderson in #8740

Fix issue #8389: any nonzero byte is truthy by @bkietz in #8690

Add Dart changelog entry for v25.9.23 by @vaind in #8785

[dart] fix bug which generated wrong code by @fawdlstty in #8780

add assert to fix GCC warning on Ubuntu 24.04 LTS by @gafferongames in #8804

chore: fix quick start typos by @Homeblest in #8520

[Java] Generate Longs from uint enums by @nevi-me in #8727

[Java] Add notify to Java keywords by @nevi-me in #8724

More robust C++20 check by @cyyever in #8631

[Dart] Fix dart object api test by @jakobkordez in #8751

feat: library definition for PlatformIO by @obones in #8261

Use macos-15-intel not macos-latest-large for Intel macOS by @kou in #8777

[C++] Fix vtable deduplication for 64-bit buffers >2GB by @gowsiany in #8591

Bump js-yaml from 4.1.0 to 4.1.1 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #8779

TypeScript: read vtable entries as uint16 by @jtbandes in #8435

[fuzzer] Adds code generation target. by @coder7695 in #8795

[CI] Revert back to using swift-actions by @mustiikhalil in #8806

[Python] Fix inconsistent creator function naming in generated code by @peter-soos in #8792

Remove legacy Conan recipe and update documentation by @uilianries in #8712

[Python] Fix generating init.py for invalid path by @fliiiix in #8810

[Python] Optimize Builder startup: lazy sharedStrings and fast vtable init by @satur9nine in #8807

Fix platform ifdefs for locale independent str functions by @jamesr in #8678

fix CScript string.compare by @whitecostume in #8547

[Go] add BenchmarkBuildAllocations by @jdemeyer in #8287

[Go] Write required string fields into the buffer when using Object API by @razvanalex in #8402

[Java] Use Table's fully qualified path by @nevi-me in #8729

[Python] Optimize Offset/Pad/Prep: use cached head and slicing by @satur9nine in #8808

[CI] Migrating to swift Wasm on for Github actions by @mustiikhalil in #8814

Modernize GitHub CI actions by @fliiiix in #8812

[Swift] Flexbuffers tests for Wasm by @mustiikhalil in #8815

CI: Fix typo in version by @fliiiix in #8817

Handle missing output directory better by @fliiiix in #8764

Improves Rust code generation by @csmulhern in #8564

update labeler.yml to v5+ format by @jtdavis777 in #8818

fix(idl_gen_rust): Fix lifetime warning added in Rust 1.89 by @RobJellinghaus in #8709

[rust] add deser support for enum type by @fawdlstty in #8803

rust: impl TrustedLen for VectorIter by @riptl in #8797

Implement --file-names-only by @jtdavis777 in #8788

Add .NET Standard 2.0 to documentation by @jtdavis777 in #8819

Fix(ts): escape doc comment terminator in generated JSDoc by @Ky0toFu in #8820

Add --file-names-only to flatc.md by @jtdavis777 in #8821

Fixes unused imports in Rust code generator by @csmulhern in #8828

Fix docs: typo & dead link by @kendegemaro in #8826

Fix TS object API generation of schema containing array of enumeration having no zero default by @jtdavis777 in #8832

Fix vector of table with naked ptr by @jtdavis777 in #8830

Deprecate --ts-flat-files and --ts-entry-points by @jtdavis777 in #8831

chore: switch package to license expression by @thompson-tomo in #8840

Arrays of Enumerations without a value for 0 are no longer valid by @jtdavis777 in #8836

Upgrade Kotlin to MacOS 15 by @jtdavis777 in #8845

[TS] Flexbuffers root vector fix by @jtdavis777 in #8847

[Kotlin] Fix nullability of generated Kotlin ByteBuffer accessors by @souma987 in #8844

[Kotlin] Fix casing in generated Kotlin struct constructor function by @souma987 in #8849

Remove progaurd-rules.pro by @dbaileychess in #8866

Run clang-format by @dbaileychess in #8865

Add --gen-absl-hash option to generate AbslHashValue for structs. by @dbaileychess in #8868

Default Vector Support C++ by @dbaileychess in #8870

FlatBuffers Version 25.12.19 by @dbaileychess in #8871

New Contributors

@daynual made their first contribution in #8695

@vsmcea made their first contribution in #8734

@dws made their first contribution in #8719

@jakobkordez made their first contribution in #8748

@coder7695 made their first contribution in #8736

@are-you-tilted-already made their first contribution in #8735

@cosmith-nvidia made their first contribution in #8754

@satur9nine made their first contribution in #8786

@fawdlstty made their first contribution in #8780

@gafferongames made their first contribution in #8804

@Homeblest made their first contribution in #8520

@nevi-me made their first contribution in #8727

@cyyever made their first contribution in #8631

@obones made their first contribution in #8261

@kou made their first contribution in #8777

@gowsiany made their first contribution in #8591

@jtbandes made their first contribution in #8435

@peter-soos made their first contribution in #8792

@jamesr made their first contribution in #8678

@whitecostume made their first contribution in #8547

@RobJellinghaus made their first contribution in #8709

@riptl made their first contribution in #8797

@Ky0toFu made their first contribution in #8820

@kendegemaro made their first contribution in #8826

@thompson-tomo made their first contribution in #8840

@souma987 made their first contribution in #8844

Full Changelog: v25.9.23...v25.12.19

From the same repository

google/flatbuffers

25.9.2324 Sept 2025

[Swift] Adds new API to reduce memory copying within swift by @mustiikhalil in #8484

What's Changed

[Swift] Adds new API to reduce memory copying within swift by @mustiikhalil in #8484
[C++] Fixes access to union members when generating code with options "--cpp-field-case-style upper" and "--gen-object-api" by @Ailuridae in #8447
[C++] Fix dereference operator of VectorIterator to structures by @admo in #8425
[TS] Enum value default null by @bjornharrtell in #8619
[Swift] Flexbuffers native swift port by @mustiikhalil in #8577
[TS] Upgrade deps by @bjornharrtell in #8620
Avoid outputting Python files for already generated types by @akb825 in #8500
Bugfix: grpc python code generation location and file suffix by @fliiiix in #8359
Decode bytes to strings in Python Object API by @sethraymond in #8551
[Swift] Adds windows support by @mustiikhalil in #8622
[TS] Fix relative paths for exports by @trumully in #8517
[CI] Moves swift actions to use next by @mustiikhalil in #8632
Bugfix/new decode flag by @fliiiix in #8634
Use correct default type for str by @fliiiix in #8623
Fixed typo in quick_start.md by @Dylan-Gallagher in #8592
Fix typo in code comment by @fliiiix in #8549
Update README logo path by @gio3k in #8602
[Python] Avoid include own type by @fliiiix in #8625
[Swift] Fixes inlining & module importing by @mustiikhalil in #8637
Fix Enum type definition by @fliiiix in #8624
Fix JavaScript typo in mkdocs.yml by @luksab in #8515
[Python] Avoid double flatbuffers include in pyi files by @fliiiix in #8626
doc: PHP fread typo by @rogeriolino in #8566
[Swift] Allows keepingCapacity for the underlying memory by @mustiikhalil in #8643
[Python] Enhance object API __init__ with typed keyword arguments by @crackcomm in #8615
Fix start page: Backwards and Forwards Compatibility by @fliiiix in #8645
Support Rust edition 2024 by @aleb in #8638
Bugfix eq for numpy data types by @fliiiix in #8646
[Swift] Moves capacity from storage to struct by @mustiikhalil in #8650
[Swift] Fixes load from misaligned raw pointer by @mustiikhalil in #8649
Fix native_type non-native_inline fields, add tests by @souryavarenya in #8655
Remove stray required in docs by @fliiiix in #8663
Doc fix verifier example code for cpp by @fliiiix in #8664
docs: fix broken link in readme by @Nugine in #8656
Fix small typo in word JavaScript (JavasScript -> JavaScript) by @isaiahpettingill in #8530
Add Rust reflection documentation by @candysonya in #8536
CMakeLists: include(CheckSymbolExists) so check_symbol_exists() will work by @vzjc in #8580
Fix: Actually call ValidateOptions by @thejtshow in #8665
Update TS codegen - change getFullyQualifiedName return type from string to string literal by @rametta in #8421
[CI] Fixes swift tests on windows by @mustiikhalil in #8685
fix(go/grpc): avoid panic on short FlatBuffers input by @thevilledev in #8684
Bugfix: grpc supress incorrect warning by @fliiiix in #8669
gRPC callbackService support added by @shankeleven in #8666
[C#] Fix union verifier by @TorsteinTenstadNorsonic in #8593
Add bounds checking to a C# method where it was missing by @CurtHagenlocher in #8673
[C#] Improve Span<> utilization by @bigjt-dev in #8588
[C#] Added ToSizedArrayPadded(int padLeft, int padRight) to ByteBuffers to avoid unnecessary copying. by @petersvp in #8658
fix(idl_gen_ts): bool to number conversion in mutable API (#8676) by @nurbo in #8677
[Swift] Fixes windows CI by @mustiikhalil in #8702
Use the Google Style for clang-format without exceptions by @dbaileychess in #8706
bulk code format fix by @dbaileychess in #8707
Bump the npm_and_yarn group across 1 directory with 2 updates by @dependabot[bot] in #8704
FlatBuffers Version 25.9.23 by @dbaileychess in #8708

New Contributors

@Ailuridae made their first contribution in #8447
@sethraymond made their first contribution in #8551
@trumully made their first contribution in #8517
@Dylan-Gallagher made their first contribution in #8592
@gio3k made their first contribution in #8602
@luksab made their first contribution in #8515
@rogeriolino made their first contribution in #8566
@crackcomm made their first contribution in #8615
@aleb made their first contribution in #8638
@souryavarenya made their first contribution in #8655
@Nugine made their first contribution in #8656
@isaiahpettingill made their first contribution in #8530
@vzjc made their first contribution in #8580
@thejtshow made their first contribution in #8665
@rametta made their first contribution in #8421
@thevilledev made their first contribution in #8684
@shankeleven made their first contribution in #8666
@TorsteinTenstadNorsonic made their first contribution in #8593
@bigjt-dev made their first contribution in #8588
@petersvp made their first contribution in #8658
@nurbo made their first contribution in #8677

Full Changelog: v25.2.10...v25.9.23

Open source →

Additional notes

flatc: --grpc-callback-api flag generates C++ gRPC Callback API server CallbackService skeletons AND client native callback/async stubs (unary + all streaming reactor forms) (opt-in, non-breaking, issue #8596).
Swift - Adds new API to reduce memory copying within swift (#8484)
Rust - Support Rust edition 2024 (#8638)
[C++] - Use the Google Style for clang-format without exceptions (#8706)

Open source →

25.1.2122 Jan 2025

Add new Docs source files by @dbaileychess in #8461

What's Changed

Add new Docs source files by @dbaileychess in #8461
docs.yml Add workflow for updating docs by @dbaileychess in #8462
docs.yml enable for pushes to main branch by @dbaileychess in #8463
contributions.md Add doc about how to contribute to flatbuffers by @dbaileychess in #8464
CNAME: add custom domain by @dbaileychess in #8465
[Swift] Bug fix for verifier where its being copied by @mustiikhalil in #8451
flatc.md Add more documentation by @dbaileychess in #8467
quick_start.md: Add quick start guide by @dbaileychess in #8469
Add Annotating Docs by @dbaileychess in #8470
mkdocs.yml add footer and other info by @dbaileychess in #8471
schema.md Fixed some warnings by @dbaileychess in #8472
Fix crash for TypeScript enum in substruct by @fergushenderson in #8430
fix typo in tutorial by @shynur in #8476
A couple of small updates to the docs by @srinarasi in #8477
Add imports for bazel by @dbaileychess in #8486
Rust full reflection by @candysonya in #8102
Fix a minor typo in flatc --help output by @musicinmybrain in #8468
Add missing headers to runtime_cc target by @mering in #8492
Use Label() to resolve repo name by @mering in #8493
Use rules_bazel_integration_test to download Bazel binary by @mering in #8495
Add support for Bzlmod by @mering in #8494

New Contributors

@shynur made their first contribution in #8476
@srinarasi made their first contribution in #8477
@candysonya made their first contribution in #8102
@mering made their first contribution in #8492

Full Changelog: v24.12.23...v25.1.21

Open source →

Additional notes

Rust Full Reflection (#8102)
Mostly documentation updates hosted at https://flatbuffers.dev

Open source →

24.12.2323 Dec 2024

Avoid ODR violations with flatbuffers::Verifier. by @fergushenderson in #8274

What's Changed

Avoid ODR violations with flatbuffers::Verifier. by @fergushenderson in #8274
Improve error handling on Object API name collision. by @mbeards in #8275
[Kotlin] Add workflow to release kotlin multiplatform version by @paulovap in #8014
Remove npm/rules_js dependency for C++ only use cases by @philsc in #7990
[Python] Fix various codegen problems by @anton-bobukh in #8292
[gRPC] Add new options to control the gRPC code generation by @anton-bobukh in #8298
Update build.yml to ubuntu-24.04 by @dbaileychess in #8319
Trying to fix bazel on macOS and Xcode 14.3 by @mustiikhalil in #8304
Update build.yml by @dbaileychess in #8321
Add missing opertors to VectorIterator by @Icantjuddle in #8309
[.NET] Add netstandard2.0 as target by @bjornharrtell in #8295
[Kotlin] Update to kotlin 1.9.10 by @paulovap in #8307
dart: Fix incorrect write in Float64 write method by @NotTsunami in #8290
Added automatic publishing to crates.io on publish by @rdelfin in #8263
Update release.sh by @dbaileychess in #8322
Fix operator== for flatbuffers::optional by @mikudehuane in #8223
[C++] Make code compile with -Wfloat-equal by @fliiiix in #8221
[C++] Allow using FLATBUFFERS_MIN_BUFFER_SIZE in other namespaces by @dominiklohmann in #8229
[Python] Generate .pyi stub files when --python-typing is on. by @anton-bobukh in #8312
[Swift] Sets Swift minimum support to 5.8 by @mustiikhalil in #8228
[C++] Update the validator to skip structs in namespaces other than the current one. by @anton-bobukh in #8324
[BinaryAnnotator] Add more options that control the generation of .afb files by @anton-bobukh in #8323
[Python] Render enums as Python IntEnum by @fliiiix in #8145
[gRPC] Update the code generator for Python to produce typed handlers by @anton-bobukh in #8326
Add parentheses in FLATBUFFERS_MAX_BUFFER_SIZE, FLATBUFFERS_MAX_64_BUFFER_SIZE to avoid preprocessor definition collision by @mspanc in #8377
Add "empty()" to vector by @alphalex-google in #8369
Remove unused comment and fix typo. by @lamtrinhdev in #8366
Upgrade Rust dependencies by @gschulze in #8372
[jumbo] Add begin()/end() to DetachedBuffer. by @pkasting in #8370
Add a unit test for odd-sized small structs (for #8117) by @nolen777 in #8363
Update libs.versions.toml by @mikhsol in #8387
docs: update README.md by @eltociear in #8383
Use actions/upload-artifact@v4 on CI by @aardappel in #8410
Attempt to fix Rust CI by @aardappel in #8411
[Swift] Fixes spelling mistake in the word position by @mustiikhalil in #8330
[Swift] Addresses a bug where verifier skips capacity when verifying ID on buffers by @mustiikhalil in #8413
[Swift] Updates CocoaPods author info & fixes bug with versioning not working as expected by @mustiikhalil in #8328
Update grpc-core version by @mikhsol in #8412
FlexBuffers: support "natural utf8" output in ToString by @aardappel in #8426
use ALIGN for Push::alignment in struct types by @bkietz in #8398
Removes 'size' and 'alignment' as Rust keywords by @csmulhern in #8139
dart: use enhanced enums by @vaind in #8313
[Swift] Improves vectors performance & arrays within lib by @mustiikhalil in #8415
FlatBuffers Version 24.12.23 by @dbaileychess in #8459

New Contributors

@fergushenderson made their first contribution in #8274
@Icantjuddle made their first contribution in #8309
@NotTsunami made their first contribution in #8290
@rdelfin made their first contribution in #8263
@mikudehuane made their first contribution in #8223
@dominiklohmann made their first contribution in #8229
@mspanc made their first contribution in #8377
@alphalex-google made their first contribution in #8369
@lamtrinhdev made their first contribution in #8366
@gschulze made their first contribution in #8372
@nolen777 made their first contribution in #8363
@mikhsol made their first contribution in #8387
@eltociear made their first contribution in #8383
@bkietz made their first contribution in #8398
@csmulhern made their first contribution in #8139

Full Changelog: v24.3.25...v24.12.23

Open source →