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[docs] Update compiling with babel section #1298

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Jan 25, 2024
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[docs] Update compiling with babel section #1298

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dfa0ba9
Update compiling with babel section
augustjk Jan 18, 2024
fa32a81
Make dep install multiline
augustjk Jan 25, 2024
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33 changes: 17 additions & 16 deletions packages/lit-dev-content/site/docs/v3/tools/publishing.md
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Expand Up @@ -78,29 +78,30 @@ To compile a Lit component that uses proposed JavaScript features not yet includ
Install Babel and the Babel plugins you need. For example:

```sh
npm install --save-dev @babel/core
npm install --save-dev @babel/plugin-proposal-class-properties
npm install --save-dev @babel/plugin-proposal-decorators
npm install --save-dev \
@babel/core \
@babel/cli \
@babel/preset-env \
@babel/plugin-proposal-decorators
```

Configure Babel. For example:

**babel.config.js**
**babel.config.json**

```js
const assumptions = {
"setPublicClassFields": true
};

const plugins = [
['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true } ],
["@babel/plugin-proposal-class-properties"],

];

module.exports = { assumptions, plugins };
```json
{
"presets": [
["@babel/preset-env", {"targets": "defaults"}]
],
"plugins": [
["@babel/plugin-proposal-decorators", {"version": "2023-05"}]
]
}
```

You can adjust the `"targets"` option to target browsers you wish to support. See [`@babel/preset-env`](https://babeljs.io/docs/babel-preset-env) for available options.

You can run Babel via a bundler plugin such as [@rollup/plugin-babel](https://www.npmjs.com/package/@rollup/plugin-babel), or from the command line. See the [Babel documentation](https://babeljs.io/docs/en/) for more information.

## Publishing best practices
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