Fable 4.27.0

There is a newer version of this package available.
See the version list below for details.
dotnet tool install --global Fable --version 4.27.0
                    
This package contains a .NET tool you can call from the shell/command line.
dotnet new tool-manifest
                    
if you are setting up this repo
dotnet tool install --local Fable --version 4.27.0
                    
This package contains a .NET tool you can call from the shell/command line.
#tool dotnet:?package=Fable&version=4.27.0
                    
nuke :add-package Fable --version 4.27.0
                    

Fable: F# |> JS

Nuget Build Join the chat at https://gitter.im/fable-compiler/Fable

Follow us on Twitter!

Fable is an F# to JavaScript compiler powered FSharp Compiler Services, designed to make F# a first-class citizen of the JavaScript ecosystem. Check the website for more information and if you find the project useful, don't forget to give us a star!

Fable actually uses a fork of FCS with a few tweaks. Binaries are in lib/fcs folder. See this PR for more info.

Getting started

Check this page.

Building

Requirements

Use VSCode Dev Container

You can use VSCode Dev Container to get a preconfigured environment both with requirements and VSCode extensions.

  1. You need to have docker installed and running.
  2. Install the Dev Container extension in VSCode
  3. Open the project in VSCode and click on the green button in the bottom left corner.
Use your machine

Make sure the following requirements are installed in your system:

Build

Run ./build.sh or ./build.cmd to see the build options.

When using VSCode, you can also run the build tasks from the command palette (Ctrl+Shift+P) by typing Run Task and selecting the task you want to run.

We also configured several debug configurations that you can use from the debug panel (Ctrl+Shift+D). This is useful as you can attach the debugger to the Fable compiler process to check what's going on.

Contributing

Just by using Fable you're already contributing! You can help the community a lot by sharing examples and experiences in your personal (or Fable's) blog and/or by editing the Fable Resources page.

Send bug reports (ideally with minimal code to reproduce the problem) and feature requests to this GitHub repository. To interact with the community you can use the Gitter chat but please note maintainers are not checking the chat regularly.

If you are up to contribute a fix or a feature yourself, you're more than welcome! Please send first an issue or a minimal Work In Progess PR so we can discuss the implementation details in advance.

List of changelogs

Product Compatible and additional computed target framework versions.
.NET net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

Version Downloads Last Updated
5.0.0-alpha.22 419 12/26/2025
5.0.0-alpha.21 638 12/15/2025
5.0.0-alpha.20 905 12/8/2025
5.0.0-alpha.19 504 12/4/2025
5.0.0-alpha.18 722 12/3/2025
5.0.0-alpha.17 588 11/27/2025
5.0.0-alpha.16 177 11/25/2025
5.0.0-alpha.15 1,091 11/19/2025
5.0.0-alpha.14 5,406 7/25/2025
5.0.0-alpha.13 4,090 5/4/2025
5.0.0-alpha.12 1,493 3/14/2025
5.0.0-alpha.11 832 3/3/2025
5.0.0-alpha.10 1,192 2/16/2025
5.0.0-alpha.9 1,744 1/28/2025
5.0.0-alpha.8 234 1/27/2025
5.0.0-alpha.7 471 1/23/2025
5.0.0-alpha.6 198 1/23/2025
5.0.0-alpha.5 859 1/9/2025
5.0.0-alpha.4 256 1/3/2025
5.0.0-alpha.3 683 12/18/2024
5.0.0-alpha.2 333 11/26/2024
5.0.0-alpha.1 192 11/24/2024
4.28.0 2,097 11/25/2025
4.27.0 2,376 11/13/2025
4.25.0 14,186 4/26/2025
4.24.0 39,215 11/19/2024
4.23.0 9,097 10/28/2024
4.22.0 12,204 10/2/2024
4.21.0 6,148 9/19/2024
4.20.0 4,713 9/4/2024
4.19.3 34,801 6/17/2024
4.19.2 582 6/13/2024
4.19.1 521 6/13/2024
4.19.0 2,096 6/10/2024
4.18.0 2,465 5/23/2024
4.17.0 16,666 4/23/2024
4.16.0 11,814 3/20/2024
4.15.0 1,111 3/18/2024
4.14.0 13,219 3/1/2024
4.13.0 4,979 2/20/2024
4.12.2 18,225 2/13/2024
4.12.1 928 2/13/2024
4.11.0 6,083 1/30/2024
4.10.0 19,164 1/25/2024
4.9.0 33,546 12/14/2023
4.8.1 1,716 12/12/2023
4.8.0 845 12/12/2023
4.7.0 9,513 12/6/2023
4.6.0 12,112 11/27/2023
4.5.0 26,124 11/7/2023
4.4.1 3,029 10/25/2023
4.4.0 20,199 10/24/2023
4.3.0 5,028 10/18/2023
4.2.2 4,455 10/14/2023
4.2.1 14,558 9/29/2023
4.1.4 53,620 5/16/2023
4.1.3 8,200 4/28/2023
4.1.2 4,170 4/22/2023
4.1.1 779 4/22/2023
4.1.0 1,206 4/18/2023
4.1.0-beta-001 803 4/16/2023
4.0.5 2,157 4/8/2023
4.0.4 2,587 4/4/2023
4.0.3 2,375 3/30/2023
4.0.2 1,247 3/27/2023
4.0.1 24,319 3/18/2023
4.0.0 6,968 3/14/2023
4.0.0-theta-018 57,865 11/19/2022
4.0.0-theta-017 766 11/16/2022
4.0.0-theta-016 909 11/13/2022
4.0.0-theta-015 728 11/5/2022
4.0.0-theta-014 540 10/31/2022
4.0.0-theta-012 1,312 10/14/2022
4.0.0-theta-011 1,102 10/4/2022
4.0.0-theta-010 563 9/28/2022
4.0.0-theta-009 565 9/28/2022
4.0.0-theta-008 571 9/22/2022
4.0.0-theta-007 518 9/21/2022
4.0.0-theta-006 577 9/18/2022
4.0.0-theta-005 523 9/17/2022
4.0.0-theta-004 623 9/14/2022
4.0.0-theta-003 457 9/12/2022
4.0.0-theta-002 438 9/11/2022
4.0.0-theta-001 491 9/9/2022
4.0.0-snake-island-alpha-026 540 9/8/2022
4.0.0-snake-island-alpha-025 527 9/6/2022
4.0.0-snake-island-alpha-024 688 9/2/2022
4.0.0-snake-island-alpha-023 479 8/30/2022
4.0.0-snake-island-alpha-021 1,077 8/21/2022
4.0.0-snake-island-alpha-020 541 8/14/2022
4.0.0-snake-island-alpha-019 619 7/31/2022
4.0.0-snake-island-alpha-018 449 7/30/2022
4.0.0-snake-island-alpha-017 489 7/27/2022
4.0.0-snake-island-alpha-016 454 7/26/2022
4.0.0-snake-island-alpha-015 409 7/26/2022
4.0.0-snake-island-alpha-014 458 7/25/2022
4.0.0-snake-island-alpha-013 463 7/25/2022
4.0.0-snake-island-alpha-012 591 7/12/2022
4.0.0-snake-island-alpha-011 458 6/23/2022
4.0.0-snake-island-alpha-010 482 6/3/2022
4.0.0-snake-island-alpha-009 411 6/2/2022
4.0.0-snake-island-alpha-008 449 6/1/2022
4.0.0-snake-island-alpha-007 478 5/25/2022
4.0.0-snake-island-alpha-006 428 5/24/2022
4.0.0-snake-island-alpha-005 472 5/23/2022
4.0.0-snake-island-alpha-004 450 5/21/2022
4.0.0-snake-island-alpha-003 453 5/20/2022
4.0.0-snake-island-alpha-002 426 5/19/2022
4.0.0-snake-island-alpha-001 470 5/11/2022
3.7.22 4,259 5/11/2023
3.7.21 389 5/11/2023
3.7.20 37,855 9/27/2022
3.7.19 705 9/27/2022
3.7.18 9,246 8/16/2022
3.7.17 7,168 7/21/2022
3.7.16 4,575 7/5/2022
3.7.15 1,106 6/29/2022
3.7.14 4,725 6/14/2022
3.7.12 3,970 5/27/2022
3.7.11 7,356 5/1/2022
3.7.10 935 4/29/2022
3.7.9 10,281 4/1/2022
3.7.8 1,918 3/24/2022
3.7.7 5,541 3/22/2022
3.7.6 3,126 3/16/2022
3.7.5 24,859 3/1/2022
3.7.4 1,127 2/25/2022
3.7.3 4,876 2/23/2022
3.7.2 1,549 2/22/2022
3.7.1 6,397 2/17/2022
3.7.0 8,939 2/7/2022
3.7.0-beta-015 1,400 1/26/2022
3.7.0-beta-014 504 1/24/2022
3.7.0-beta-012 554 1/18/2022
3.7.0-beta-011 486 1/14/2022
3.7.0-beta-010 430 1/14/2022
3.7.0-beta-009 442 1/12/2022
3.7.0-beta-008 436 1/11/2022
3.7.0-beta-007 469 1/11/2022
3.7.0-beta-006 462 1/11/2022
3.7.0-beta-005 472 1/7/2022
3.7.0-beta-004 443 1/5/2022
3.7.0-beta-003 519 1/4/2022
3.7.0-beta-002 445 12/28/2021
3.7.0-beta-001 456 12/20/2021
3.6.3 19,650 12/1/2021
3.6.2 8,997 11/26/2021
3.6.1 12,284 11/23/2021
3.6.0 1,920 11/19/2021
3.6.0-beta-003 588 11/17/2021
3.6.0-beta-002 435 11/15/2021
3.6.0-beta-001 455 11/14/2021
3.4.10 1,635 11/8/2021
3.4.9 2,756 11/5/2021
3.4.8 684 11/4/2021
3.4.7 1,827 10/28/2021
3.4.6 1,292 10/26/2021
3.4.5 925 10/21/2021
3.4.4 1,151 10/20/2021
3.4.3 22,453 10/14/2021
3.4.2 1,491 10/5/2021
3.4.1 753 10/4/2021
3.4.0 1,071 10/1/2021
3.3.1 1,942 9/27/2021
3.3.0 3,716 9/16/2021
3.3.0-beta-002 645 8/28/2021
3.3.0-beta-001 406 8/27/2021
3.2.14 1,553 9/11/2021
3.2.12 5,020 8/26/2021
3.2.11 6,336 8/19/2021
3.2.10 3,055 8/2/2021
3.2.9 47,459 7/8/2021
3.2.8 2,747 6/26/2021
3.2.7 690 6/25/2021
3.2.6 2,921 6/22/2021
3.2.5 1,081 6/21/2021
3.2.4 917 6/16/2021
3.2.3 967 6/11/2021
3.2.2 1,119 6/3/2021
3.2.1 20,461 5/28/2021
3.2.0 751 5/28/2021
3.1.16 7,913 5/14/2021
3.1.15 7,002 4/16/2021
3.1.14 5,171 4/9/2021
3.1.12 3,415 3/23/2021
3.1.11 5,171 3/17/2021
3.1.10 1,426 3/16/2021
3.1.9 2,977 3/15/2021
3.1.8 715 3/15/2021
3.1.7 1,232 3/11/2021
3.1.6 784 3/11/2021
3.1.5 7,208 2/18/2021
3.1.4 1,151 2/12/2021
3.1.3 715 2/12/2021
3.1.2 10,749 1/25/2021
3.1.1 6,386 1/13/2021
3.1.0 1,185 1/11/2021
3.1.0-beta-001 597 1/8/2021
3.0.5 2,279 12/22/2020
3.0.4 1,466 12/19/2020
3.0.3 813 12/18/2020
3.0.2 1,357 12/16/2020
3.0.1 1,501 12/11/2020
3.0.0 3,615 12/4/2020
3.0.0-nagareyama-rc-011 834 12/2/2020
3.0.0-nagareyama-rc-010 716 11/28/2020
3.0.0-nagareyama-rc-009 1,271 11/25/2020
3.0.0-nagareyama-rc-008 796 11/19/2020
3.0.0-nagareyama-rc-007 1,030 11/15/2020
3.0.0-nagareyama-rc-006 796 11/13/2020
3.0.0-nagareyama-rc-005 613 11/12/2020
3.0.0-nagareyama-rc-004 688 11/10/2020
3.0.0-nagareyama-rc-003 659 11/9/2020
3.0.0-nagareyama-rc-002 766 11/8/2020
3.0.0-nagareyama-rc-001 729 11/7/2020
3.0.0-nagareyama-beta-005 662 10/31/2020
3.0.0-nagareyama-beta-004 818 10/27/2020
3.0.0-nagareyama-beta-003 653 10/25/2020
3.0.0-nagareyama-beta-002 773 10/23/2020
3.0.0-nagareyama-beta-001 603 10/23/2020
3.0.0-nagareyama-alpha-017 603 10/22/2020
3.0.0-nagareyama-alpha-016 610 10/22/2020
3.0.0-nagareyama-alpha-015 640 10/19/2020
3.0.0-nagareyama-alpha-014 682 10/18/2020
3.0.0-nagareyama-alpha-012 648 10/15/2020
3.0.0-nagareyama-alpha-011 607 10/15/2020
3.0.0-nagareyama-alpha-010 638 10/13/2020
3.0.0-nagareyama-alpha-009 642 10/11/2020
3.0.0-nagareyama-alpha-008 729 10/5/2020
3.0.0-nagareyama-alpha-007 660 10/2/2020
3.0.0-nagareyama-alpha-006 619 9/30/2020
3.0.0-nagareyama-alpha-005 608 9/29/2020
3.0.0-nagareyama-alpha-004 664 9/28/2020
3.0.0-nagareyama-alpha-003 646 9/14/2020
3.0.0-nagareyama-alpha-002 599 9/13/2020
3.0.0-nagareyama-alpha-001 745 9/13/2020

## Fixed

- [All] Fix MSBuildResolver to include define when restoring the project (#4252)
- [All] Disable .NET Welcome message when cracking project (#4014)