CoCalc is a real-time collaborative commercial alternative to JupyterHub and Overleaf that provides Jupyter Notebooks, LaTeX documents, and SageMath.

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module.exports = api => {
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	api.cache(true);
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	const presets = [
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		[
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			"@babel/preset-env",
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			{
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				targets: {
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					esmodules: true,
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				},
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			},
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		],
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	];
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	const plugins = ["@babel/plugin-proposal-optional-chaining"];
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	return {
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		presets,
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		plugins,
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	};
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};
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