babel-preset-rescript-solidjs
Applies all necessary transformations to compile ReScript code to solidJs.
The original code compiled by ReScript
is not compatible with solid
. First, the ReScript compiler breaks reactivity by reassigning component properties to variables. And second, solid
compiler expects JSX, but ReScript compiles all JSX directly to JavaScript.
This preset replaces the variable assignments and transforms the ReScript
JavaScript code back to JSX. Afterwards it runs the preset provided by solid
to compile the code.
Installation
$ npm install @fattafatta/babel-preset-rescript-solidjs --save-dev
# or
yarn add @fattafatta/babel-preset-rescript-solidjs --dev
Usage
The plugin supports JSX versions 3 and 4 with automatic version detection.
Via config file
Add this to your .babelrc
:
{
"presets": ["@fattafatta/babel-preset-rescript-solidjs"]
}
vite
With Install vite-plugin-babel
and @jihchi/vite-plugin-rescript
:
npm install vite-plugin-babel @jihchi/vite-plugin-rescript --save-dev
# or
yarn add vite-plugin-babel @jihchi/vite-plugin-rescript --dev
Configure vite.config.js
import { defineConfig } from "vite";
import createReScriptPlugin from "@jihchi/vite-plugin-rescript";
import babel from "vite-plugin-babel";
export default defineConfig({
plugins: [
createReScriptPlugin(),
babel({
babelConfig: {
presets: ["@fattafatta/babel-preset-rescript-solidjs"],
},
}),
],
resolve: {
dedupe: ['solid-js'],
},
});
Note: Sometimes vite
bundles parts of the solidJS
dependencies twice, which results in errors (like lazy components not loading correctly). If you get the warning You appear to have multiple instances of Solid. This can lead to unexpected behavior.
, use the option resolve.dedupe
like above and the problem should be fixed.
The babel plugin works with either the .babelrc
file or by passing the config directly.
Via CLI
Make sure to use the correct file extension when transforming files. ReScript files end on .bs.js
. But JSX files should use .jsx
.
babel --no-babelrc --presets @fattafatta/babel-preset-rescript-solidjs script.bs.js > script.jsx