Fable Babel Plugins

2.3.0 verified Fri May 01 auth: no javascript maintenance

Babel plugins used by the Fable compiler, an F# to JavaScript/TypeScript/Python/Dart/Rust/Beam transpiler. The package is part of the Fable ecosystem. As of v5.0.0, Fable supports multiple compilation targets. The fable-babel-plugins package is typically not installed directly but pulled in as a dependency of the Fable compiler. Its release cadence follows Fable's. Key differentiators: these plugins handle F# specific transformations in the Babel pipeline. Note: The package has been largely superseded by Fable's integrated plugin system.

Common errors

error Error: Cannot find module 'fable-babel-plugins' ↓

cause Package not installed or not found in node_modules.

fix

Run npm install fable-babel-plugins@2.3.0 (or the version matching your Fable setup).

error TypeError: plugin is not a function ↓

cause Using a named export incorrectly or using require() in an ESM context.

fix

Use import plugin from 'fable-babel-plugins'.

Warnings

deprecated This package is deprecated in favor of Fable's integrated plugin system. ↓

fix Use Fable's own plugin infrastructure; do not install this package directly.

breaking Removed CommonJS support in v3; requires ESM. ↓

fix Use import syntax instead of require().

gotcha Plugin options have changed between major versions. ↓

fix Check Fable documentation for plugin options per version.

Install

npm install fable-babel-plugins

yarn add fable-babel-plugins

pnpm add fable-babel-plugins

Imports

default
wrong
```
const plugin = require('fable-babel-plugins')
```
correct
```
import plugin from 'fable-babel-plugins'
```
ESM-only; only default export available as a function that returns the plugin visitor object.
PluginConfig
```
import { PluginConfig } from 'fable-babel-plugins'
```
TypeScript type definition for plugin options.

createPlugin

wrong

const { createPlugin } = require('fable-babel-plugins')

correct

import { createPlugin } from 'fable-babel-plugins'

Named export for programmatic plugin creation.

Quickstart

Basic usage of the default export as a Babel plugin.

import plugin from 'fable-babel-plugins';
export default {
  plugins: [
    [plugin, {
      // options (if any)
    }]
  ]
};