Fable 4.25.0

There is a newer prerelease version of this package available.
See the version list below for details.
dotnet tool install --global Fable --version 4.25.0
                    
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 4.25.0
                    
This package contains a .NET tool you can call from the shell/command line.
#tool dotnet:?package=Fable&version=4.25.0
                    
nuke :add-package Fable --version 4.25.0
                    

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.13 1,467 5/4/2025
5.0.0-alpha.12 1,414 3/14/2025
5.0.0-alpha.11 759 3/3/2025
5.0.0-alpha.10 1,022 2/16/2025
5.0.0-alpha.9 1,118 1/28/2025
5.0.0-alpha.8 163 1/27/2025
5.0.0-alpha.7 401 1/23/2025
5.0.0-alpha.6 135 1/23/2025
5.0.0-alpha.5 799 1/9/2025
5.0.0-alpha.4 196 1/3/2025
5.0.0-alpha.3 601 12/18/2024
5.0.0-alpha.2 274 11/26/2024
5.0.0-alpha.1 132 11/24/2024
4.25.0 3,659 4/26/2025
4.24.0 28,424 11/19/2024
4.23.0 6,174 10/28/2024
4.22.0 9,863 10/2/2024
4.21.0 4,726 9/19/2024
4.20.0 3,985 9/4/2024
4.19.3 27,806 6/17/2024
4.19.2 459 6/13/2024
4.19.1 253 6/13/2024
4.19.0 1,885 6/10/2024
4.18.0 2,275 5/23/2024
4.17.0 13,794 4/23/2024
4.16.0 11,016 3/20/2024
4.15.0 1,020 3/18/2024
4.14.0 12,938 3/1/2024
4.13.0 4,820 2/20/2024
4.12.2 18,124 2/13/2024
4.12.1 834 2/13/2024
4.11.0 5,973 1/30/2024
4.10.0 18,901 1/25/2024
4.9.0 29,805 12/14/2023
4.8.1 1,616 12/12/2023
4.8.0 736 12/12/2023
4.7.0 8,980 12/6/2023
4.6.0 11,996 11/27/2023
4.5.0 25,868 11/7/2023
4.4.1 2,931 10/25/2023
4.4.0 20,115 10/24/2023
4.3.0 4,924 10/18/2023
4.2.2 4,183 10/14/2023
4.2.1 14,124 9/29/2023
4.1.4 52,475 5/16/2023
4.1.3 8,076 4/28/2023
4.1.2 4,051 4/22/2023
4.1.1 680 4/22/2023
4.1.0 1,097 4/18/2023
4.1.0-beta-001 689 4/16/2023
4.0.5 2,038 4/8/2023
4.0.4 2,276 4/4/2023
4.0.3 2,264 3/30/2023
4.0.2 1,132 3/27/2023
4.0.1 23,028 3/18/2023
4.0.0 6,811 3/14/2023
4.0.0-theta-018 55,118 11/19/2022
4.0.0-theta-017 637 11/16/2022
4.0.0-theta-016 788 11/13/2022
4.0.0-theta-015 610 11/5/2022
4.0.0-theta-014 420 10/31/2022
4.0.0-theta-012 1,210 10/14/2022
4.0.0-theta-011 988 10/4/2022
4.0.0-theta-010 436 9/28/2022
4.0.0-theta-009 436 9/28/2022
4.0.0-theta-008 469 9/22/2022
4.0.0-theta-007 411 9/21/2022
4.0.0-theta-006 453 9/18/2022
4.0.0-theta-005 388 9/17/2022
4.0.0-theta-004 511 9/14/2022
4.0.0-theta-003 350 9/12/2022
4.0.0-theta-002 306 9/11/2022
4.0.0-theta-001 394 9/9/2022
4.0.0-snake-island-alpha-026 423 9/8/2022
4.0.0-snake-island-alpha-025 401 9/6/2022
4.0.0-snake-island-alpha-024 547 9/2/2022
4.0.0-snake-island-alpha-023 355 8/30/2022
4.0.0-snake-island-alpha-021 932 8/21/2022
4.0.0-snake-island-alpha-020 441 8/14/2022
4.0.0-snake-island-alpha-019 495 7/31/2022
4.0.0-snake-island-alpha-018 345 7/30/2022
4.0.0-snake-island-alpha-017 381 7/27/2022
4.0.0-snake-island-alpha-016 348 7/26/2022
4.0.0-snake-island-alpha-015 316 7/26/2022
4.0.0-snake-island-alpha-014 360 7/25/2022
4.0.0-snake-island-alpha-013 341 7/25/2022
4.0.0-snake-island-alpha-012 474 7/12/2022
4.0.0-snake-island-alpha-011 344 6/23/2022
4.0.0-snake-island-alpha-010 352 6/3/2022
4.0.0-snake-island-alpha-009 307 6/2/2022
4.0.0-snake-island-alpha-008 330 6/1/2022
4.0.0-snake-island-alpha-007 353 5/25/2022
4.0.0-snake-island-alpha-006 311 5/24/2022
4.0.0-snake-island-alpha-005 337 5/23/2022
4.0.0-snake-island-alpha-004 315 5/21/2022
4.0.0-snake-island-alpha-003 335 5/20/2022
4.0.0-snake-island-alpha-002 308 5/19/2022
4.0.0-snake-island-alpha-001 337 5/11/2022
3.7.22 4,026 5/11/2023
3.7.21 285 5/11/2023
3.7.20 37,448 9/27/2022
3.7.19 587 9/27/2022
3.7.18 8,444 8/16/2022
3.7.17 6,978 7/21/2022
3.7.16 4,444 7/5/2022
3.7.15 981 6/29/2022
3.7.14 4,610 6/14/2022
3.7.12 3,835 5/27/2022
3.7.11 7,075 5/1/2022
3.7.10 835 4/29/2022
3.7.9 10,155 4/1/2022
3.7.8 1,800 3/24/2022
3.7.7 5,416 3/22/2022
3.7.6 2,998 3/16/2022
3.7.5 24,197 3/1/2022
3.7.4 987 2/25/2022
3.7.3 4,752 2/23/2022
3.7.2 1,427 2/22/2022
3.7.1 6,260 2/17/2022
3.7.0 8,768 2/7/2022
3.7.0-beta-015 1,282 1/26/2022
3.7.0-beta-014 373 1/24/2022
3.7.0-beta-012 423 1/18/2022
3.7.0-beta-011 357 1/14/2022
3.7.0-beta-010 322 1/14/2022
3.7.0-beta-009 330 1/12/2022
3.7.0-beta-008 308 1/11/2022
3.7.0-beta-007 340 1/11/2022
3.7.0-beta-006 319 1/11/2022
3.7.0-beta-005 342 1/7/2022
3.7.0-beta-004 323 1/5/2022
3.7.0-beta-003 385 1/4/2022
3.7.0-beta-002 309 12/28/2021
3.7.0-beta-001 324 12/20/2021
3.6.3 19,464 12/1/2021
3.6.2 8,846 11/26/2021
3.6.1 12,164 11/23/2021
3.6.0 1,771 11/19/2021
3.6.0-beta-003 453 11/17/2021
3.6.0-beta-002 306 11/15/2021
3.6.0-beta-001 332 11/14/2021
3.4.10 1,481 11/8/2021
3.4.9 2,575 11/5/2021
3.4.8 571 11/4/2021
3.4.7 1,697 10/28/2021
3.4.6 1,156 10/26/2021
3.4.5 816 10/21/2021
3.4.4 962 10/20/2021
3.4.3 20,593 10/14/2021
3.4.2 1,361 10/5/2021
3.4.1 596 10/4/2021
3.4.0 934 10/1/2021
3.3.1 1,802 9/27/2021
3.3.0 3,579 9/16/2021
3.3.0-beta-002 516 8/28/2021
3.3.0-beta-001 302 8/27/2021
3.2.14 1,442 9/11/2021
3.2.12 4,889 8/26/2021
3.2.11 6,216 8/19/2021
3.2.10 2,930 8/2/2021
3.2.9 47,327 7/8/2021
3.2.8 2,614 6/26/2021
3.2.7 576 6/25/2021
3.2.6 2,787 6/22/2021
3.2.5 937 6/21/2021
3.2.4 794 6/16/2021
3.2.3 843 6/11/2021
3.2.2 1,016 6/3/2021
3.2.1 19,284 5/28/2021
3.2.0 624 5/28/2021
3.1.16 7,767 5/14/2021
3.1.15 6,868 4/16/2021
3.1.14 5,042 4/9/2021
3.1.12 3,288 3/23/2021
3.1.11 5,022 3/17/2021
3.1.10 1,301 3/16/2021
3.1.9 2,840 3/15/2021
3.1.8 594 3/15/2021
3.1.7 1,087 3/11/2021
3.1.6 657 3/11/2021
3.1.5 7,071 2/18/2021
3.1.4 1,015 2/12/2021
3.1.3 596 2/12/2021
3.1.2 10,597 1/25/2021
3.1.1 6,224 1/13/2021
3.1.0 1,060 1/11/2021
3.1.0-beta-001 462 1/8/2021
3.0.5 2,106 12/22/2020
3.0.4 1,340 12/19/2020
3.0.3 688 12/18/2020
3.0.2 1,213 12/16/2020
3.0.1 1,374 12/11/2020
3.0.0 3,493 12/4/2020
3.0.0-nagareyama-rc-011 700 12/2/2020
3.0.0-nagareyama-rc-010 580 11/28/2020
3.0.0-nagareyama-rc-009 1,129 11/25/2020
3.0.0-nagareyama-rc-008 652 11/19/2020
3.0.0-nagareyama-rc-007 876 11/15/2020
3.0.0-nagareyama-rc-006 670 11/13/2020
3.0.0-nagareyama-rc-005 489 11/12/2020
3.0.0-nagareyama-rc-004 550 11/10/2020
3.0.0-nagareyama-rc-003 519 11/9/2020
3.0.0-nagareyama-rc-002 614 11/8/2020
3.0.0-nagareyama-rc-001 603 11/7/2020
3.0.0-nagareyama-beta-005 538 10/31/2020
3.0.0-nagareyama-beta-004 689 10/27/2020
3.0.0-nagareyama-beta-003 519 10/25/2020
3.0.0-nagareyama-beta-002 648 10/23/2020
3.0.0-nagareyama-beta-001 481 10/23/2020
3.0.0-nagareyama-alpha-017 459 10/22/2020
3.0.0-nagareyama-alpha-016 464 10/22/2020
3.0.0-nagareyama-alpha-015 523 10/19/2020
3.0.0-nagareyama-alpha-014 543 10/18/2020
3.0.0-nagareyama-alpha-012 496 10/15/2020
3.0.0-nagareyama-alpha-011 488 10/15/2020
3.0.0-nagareyama-alpha-010 508 10/13/2020
3.0.0-nagareyama-alpha-009 523 10/11/2020
3.0.0-nagareyama-alpha-008 598 10/5/2020
3.0.0-nagareyama-alpha-007 522 10/2/2020
3.0.0-nagareyama-alpha-006 506 9/30/2020
3.0.0-nagareyama-alpha-005 454 9/29/2020
3.0.0-nagareyama-alpha-004 530 9/28/2020
3.0.0-nagareyama-alpha-003 502 9/14/2020
3.0.0-nagareyama-alpha-002 478 9/13/2020
3.0.0-nagareyama-alpha-001 602 9/13/2020

## Fixed

- [JS/TS] Propagate non-captured exception when running `Async.Start` or `Async.StartImmediate` (by @MangelMaxime)
- [JS/TS] Report an error at compilation time when trying to use `Async.RunSynchronously` (by @MangelMaxime)