mirror of https://github.com/gohugoio/hugo
91 lines
2.6 KiB
Markdown
91 lines
2.6 KiB
Markdown
---
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title: js.Babel
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description: Compiles the given JavaScript resource with Babel.
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categories: []
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keywords: []
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action:
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aliases: [babel]
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related:
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- functions/js/Build
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- functions/resources/Fingerprint
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- functions/resources/Minify
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returnType: resource.Resource
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signatures: ['js.Babel [OPTIONS] RESOURCE']
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toc: true
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---
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{{< new-in 0.128.0 >}}
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```go-html-template
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{{ with resources.Get "js/main.js" }}
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{{ if hugo.IsDevelopment }}
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{{ with . | babel }}
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<script src="{{ .RelPermalink }}"></script>
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{{ end }}
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{{ else }}
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{{ $opts := dict "minified" true }}
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{{ with . | babel $opts | fingerprint }}
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<script src="{{ .RelPermalink }}" integrity="{{ .Data.Integrity }}" crossorigin="anonymous"></script>
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{{ end }}
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{{ end }}
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{{ end }}
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```
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## Setup
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Step 1
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: Install [Node.js](https://nodejs.org/en/download)
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Step 2
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: Install the required Node.js packages in the root of your project.
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```sh
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npm install --save-dev @babel/core @babel/cli
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```
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Step 3
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: Add the babel executable to Hugo's `security.exec.allow` list in your site configuration:
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{{< code-toggle file=hugo >}}
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[security.exec]
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allow = ['^(dart-)?sass(-embedded)?$', '^go$', '^npx$', '^postcss$', '^babel$']
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{{< /code-toggle >}}
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## Configuration
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We add the main project's `node_modules` to `NODE_PATH` when running Babel and similar tools. There are some known [issues](https://github.com/babel/babel/issues/5618) with Babel in this area, so if you have a `babel.config.js` living in a Hugo Module (and not in the project itself), we recommend using `require` to load the presets/plugins, e.g.:
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```js
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module.exports = {
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presets: [
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[
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require("@babel/preset-env"),
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{
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useBuiltIns: "entry",
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corejs: 3,
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},
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],
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],
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};
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```
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## Options
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config
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: (`string`) Path to the Babel configuration file. Hugo will, by default, look for a `babel.config.js` in your project. More information on these configuration files can be found here: [babel configuration](https://babeljs.io/docs/en/configuration).
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minified
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: (`bool`) Save as many bytes as possible when printing
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noComments
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: (`bool`) Write comments to generated output (true by default)
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compact
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: (`bool`) Do not include superfluous whitespace characters and line terminators. Defaults to `auto` if not set.
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verbose
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: (`bool`) Log everything
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sourceMap
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: (`string`) Output `inline` or `external` sourcemap from the babel compile. External sourcemaps will be written to the target with the output file name + ".map". Input sourcemaps can be read from js.Build and node modules and combined into the output sourcemaps.
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