Fable 5.0.0-alpha.1

This is a prerelease version of Fable.

dotnet tool install --global Fable --version 5.0.0-alpha.1

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 5.0.0-alpha.1

This package contains a .NET tool you can call from the shell/command line.

#tool dotnet:?package=Fable&version=5.0.0-alpha.1&prerelease

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

nuke :add-package Fable --version 5.0.0-alpha.1

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Fable: F# |> JS

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.

You need to have docker installed and running.
Install the Dev Container extension in VSCode
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:

dotnet SDK 6 or higher
node.js with npm
Python 3 is installed and available as python
Poetry
Rust
Dart

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	net8.0 is compatible. 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.

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.1	0	11/24/2024
4.24.0	530	11/19/2024
4.23.0	1,886	10/28/2024
4.22.0	4,320	10/2/2024
4.21.0	2,014	9/19/2024
4.20.0	3,000	9/4/2024
4.19.3	10,523	6/17/2024
4.19.2	374	6/13/2024
4.19.1	164	6/13/2024
4.19.0	784	6/10/2024
4.18.0	1,757	5/23/2024
4.17.0	9,314	4/23/2024
4.16.0	8,910	3/20/2024
4.15.0	944	3/18/2024
4.14.0	12,336	3/1/2024
4.13.0	4,231	2/20/2024
4.12.2	10,789	2/13/2024
4.12.1	685	2/13/2024
4.11.0	5,477	1/30/2024
4.10.0	11,625	1/25/2024
4.9.0	24,174	12/14/2023
4.8.1	1,553	12/12/2023
4.8.0	670	12/12/2023
4.7.0	6,603	12/6/2023
4.6.0	8,041	11/27/2023
4.5.0	22,571	11/7/2023
4.4.1	2,797	10/25/2023
4.4.0	10,292	10/24/2023
4.3.0	3,988	10/18/2023
4.2.2	2,765	10/14/2023
4.2.1	8,948	9/29/2023
4.1.4	47,859	5/16/2023
4.1.3	7,201	4/28/2023
4.1.2	3,842	4/22/2023
4.1.1	617	4/22/2023
4.1.0	1,035	4/18/2023
4.1.0-beta-001	630	4/16/2023
4.0.5	1,867	4/8/2023
4.0.4	1,971	4/4/2023
4.0.3	2,184	3/30/2023
4.0.2	1,062	3/27/2023
4.0.1	19,396	3/18/2023
4.0.0	6,613	3/14/2023
4.0.0-theta-018	44,538	11/19/2022
4.0.0-theta-017	581	11/16/2022
4.0.0-theta-016	730	11/13/2022
4.0.0-theta-015	550	11/5/2022
4.0.0-theta-014	367	10/31/2022
4.0.0-theta-012	1,152	10/14/2022
4.0.0-theta-011	911	10/4/2022
4.0.0-theta-010	374	9/28/2022
4.0.0-theta-009	369	9/28/2022
4.0.0-theta-008	420	9/22/2022
4.0.0-theta-007	351	9/21/2022
4.0.0-theta-006	391	9/18/2022
4.0.0-theta-005	327	9/17/2022
4.0.0-theta-004	445	9/14/2022
4.0.0-theta-003	290	9/12/2022
4.0.0-theta-002	253	9/11/2022
4.0.0-theta-001	330	9/9/2022
4.0.0-snake-island-alpha-026	358	9/8/2022
4.0.0-snake-island-alpha-025	326	9/6/2022
4.0.0-snake-island-alpha-024	486	9/2/2022
4.0.0-snake-island-alpha-023	298	8/30/2022
4.0.0-snake-island-alpha-021	759	8/21/2022
4.0.0-snake-island-alpha-020	381	8/14/2022
4.0.0-snake-island-alpha-019	429	7/31/2022
4.0.0-snake-island-alpha-018	284	7/30/2022
4.0.0-snake-island-alpha-017	330	7/27/2022
4.0.0-snake-island-alpha-016	291	7/26/2022
4.0.0-snake-island-alpha-015	261	7/26/2022
4.0.0-snake-island-alpha-014	306	7/25/2022
4.0.0-snake-island-alpha-013	275	7/25/2022
4.0.0-snake-island-alpha-012	416	7/12/2022
4.0.0-snake-island-alpha-011	277	6/23/2022
4.0.0-snake-island-alpha-010	288	6/3/2022
4.0.0-snake-island-alpha-009	250	6/2/2022
4.0.0-snake-island-alpha-008	277	6/1/2022
4.0.0-snake-island-alpha-007	299	5/25/2022
4.0.0-snake-island-alpha-006	257	5/24/2022
4.0.0-snake-island-alpha-005	278	5/23/2022
4.0.0-snake-island-alpha-004	250	5/21/2022
4.0.0-snake-island-alpha-003	277	5/20/2022
4.0.0-snake-island-alpha-002	251	5/19/2022
4.0.0-snake-island-alpha-001	276	5/11/2022
3.7.22	3,409	5/11/2023
3.7.21	235	5/11/2023
3.7.20	36,104	9/27/2022
3.7.19	527	9/27/2022
3.7.18	8,136	8/16/2022
3.7.17	6,644	7/21/2022
3.7.16	4,361	7/5/2022
3.7.15	915	6/29/2022
3.7.14	4,539	6/14/2022
3.7.12	3,733	5/27/2022
3.7.11	6,197	5/1/2022
3.7.10	771	4/29/2022
3.7.9	10,037	4/1/2022
3.7.8	1,729	3/24/2022
3.7.7	5,342	3/22/2022
3.7.6	2,811	3/16/2022
3.7.5	21,932	3/1/2022
3.7.4	914	2/25/2022
3.7.3	4,571	2/23/2022
3.7.2	1,347	2/22/2022
3.7.1	6,174	2/17/2022
3.7.0	8,469	2/7/2022
3.7.0-beta-015	1,213	1/26/2022
3.7.0-beta-014	305	1/24/2022
3.7.0-beta-012	358	1/18/2022
3.7.0-beta-011	286	1/14/2022
3.7.0-beta-010	257	1/14/2022
3.7.0-beta-009	268	1/12/2022
3.7.0-beta-008	241	1/11/2022
3.7.0-beta-007	268	1/11/2022
3.7.0-beta-006	255	1/11/2022
3.7.0-beta-005	279	1/7/2022
3.7.0-beta-004	246	1/5/2022
3.7.0-beta-003	317	1/4/2022
3.7.0-beta-002	233	12/28/2021
3.7.0-beta-001	259	12/20/2021
3.6.3	19,152	12/1/2021
3.6.2	8,748	11/26/2021
3.6.1	12,036	11/23/2021
3.6.0	1,683	11/19/2021
3.6.0-beta-003	384	11/17/2021
3.6.0-beta-002	233	11/15/2021
3.6.0-beta-001	266	11/14/2021
3.4.10	1,403	11/8/2021
3.4.9	2,364	11/5/2021
3.4.8	498	11/4/2021
3.4.7	1,610	10/28/2021
3.4.6	1,075	10/26/2021
3.4.5	748	10/21/2021
3.4.4	880	10/20/2021
3.4.3	14,454	10/14/2021
3.4.2	1,289	10/5/2021
3.4.1	523	10/4/2021
3.4.0	864	10/1/2021
3.3.1	1,717	9/27/2021
3.3.0	3,485	9/16/2021
3.3.0-beta-002	454	8/28/2021
3.3.0-beta-001	239	8/27/2021
3.2.14	1,368	9/11/2021
3.2.12	4,803	8/26/2021
3.2.11	6,124	8/19/2021
3.2.10	2,851	8/2/2021
3.2.9	47,206	7/8/2021
3.2.8	2,541	6/26/2021
3.2.7	509	6/25/2021
3.2.6	2,703	6/22/2021
3.2.5	867	6/21/2021
3.2.4	724	6/16/2021
3.2.3	680	6/11/2021
3.2.2	945	6/3/2021
3.2.1	16,914	5/28/2021
3.2.0	536	5/28/2021
3.1.16	7,514	5/14/2021
3.1.15	6,783	4/16/2021
3.1.14	4,924	4/9/2021
3.1.12	3,187	3/23/2021
3.1.11	4,937	3/17/2021
3.1.10	1,214	3/16/2021
3.1.9	2,762	3/15/2021
3.1.8	524	3/15/2021
3.1.7	997	3/11/2021
3.1.6	577	3/11/2021
3.1.5	6,955	2/18/2021
3.1.4	934	2/12/2021
3.1.3	519	2/12/2021
3.1.2	10,494	1/25/2021
3.1.1	6,078	1/13/2021
3.1.0	973	1/11/2021
3.1.0-beta-001	378	1/8/2021
3.0.5	1,939	12/22/2020
3.0.4	1,258	12/19/2020
3.0.3	613	12/18/2020
3.0.2	1,104	12/16/2020
3.0.1	1,298	12/11/2020
3.0.0	3,401	12/4/2020
3.0.0-nagareyama-rc-011	616	12/2/2020
3.0.0-nagareyama-rc-010	502	11/28/2020
3.0.0-nagareyama-rc-009	1,046	11/25/2020
3.0.0-nagareyama-rc-008	570	11/19/2020
3.0.0-nagareyama-rc-007	793	11/15/2020
3.0.0-nagareyama-rc-006	592	11/13/2020
3.0.0-nagareyama-rc-005	411	11/12/2020
3.0.0-nagareyama-rc-004	473	11/10/2020
3.0.0-nagareyama-rc-003	442	11/9/2020
3.0.0-nagareyama-rc-002	531	11/8/2020
3.0.0-nagareyama-rc-001	521	11/7/2020
3.0.0-nagareyama-beta-005	451	10/31/2020
3.0.0-nagareyama-beta-004	589	10/27/2020
3.0.0-nagareyama-beta-003	443	10/25/2020
3.0.0-nagareyama-beta-002	573	10/23/2020
3.0.0-nagareyama-beta-001	403	10/23/2020
3.0.0-nagareyama-alpha-017	379	10/22/2020
3.0.0-nagareyama-alpha-016	380	10/22/2020
3.0.0-nagareyama-alpha-015	453	10/19/2020
3.0.0-nagareyama-alpha-014	460	10/18/2020
3.0.0-nagareyama-alpha-012	420	10/15/2020
3.0.0-nagareyama-alpha-011	410	10/15/2020
3.0.0-nagareyama-alpha-010	435	10/13/2020
3.0.0-nagareyama-alpha-009	446	10/11/2020
3.0.0-nagareyama-alpha-008	517	10/5/2020
3.0.0-nagareyama-alpha-007	447	10/2/2020
3.0.0-nagareyama-alpha-006	426	9/30/2020
3.0.0-nagareyama-alpha-005	372	9/29/2020
3.0.0-nagareyama-alpha-004	450	9/28/2020
3.0.0-nagareyama-alpha-003	419	9/14/2020
3.0.0-nagareyama-alpha-002	404	9/13/2020
3.0.0-nagareyama-alpha-001	526	9/13/2020

## Added

- [All] Add `--legacyCracker` as a fallback

## Changed

- [All] Make MSBuildCracker the default
- [All] Replace `FABLE_COMPILER_4` with `FABLE_COMPILER_5` as the compiler directive
- [All] Move TargetFramework to `net8.0`