ref: 2a171ff1c5d9b1603fe78c67d2d894bb2efccc8b
dir: /docs/content/en/hugo-pipes/transformjs.md/
---
title: TransformJS
description: Hugo Pipes can process JS files with Babel.
date: 2019-03-21
publishdate: 2019-03-21
lastmod: 2019-03-21
categories: [asset management]
keywords: []
menu:
docs:
parent: "pipes"
weight: 75
weight: 75
sections_weight: 75
draft: false
---
Any JavaScript resource file can be transpiled to another JavaScript version using `resources.TransformJS` which takes for argument the resource object and a slice of options listed below. TransformJS uses the [babel cli](https://babeljs.io/docs/en/babel-cli).
{{% note %}}
Hugo Pipe's TranspileJS requires the `@babel/cli` and `@babel/core` JavaScript packages to be installed in the environment (`npm install -g @babel/cli @babel/core`) along with any Babel plugin(s) or preset(s) used (e.g., `npm install -g @babel/preset-env`).
If you are using the Hugo Snap package, Babel and plugin(s) need to be installed locally within your Hugo site directory, e.g., `npm install @babel/cli @babel/core` without the `-g` flag.
{{% /note %}}
### Options
config [string]
: Path to the Babel configuration file
_If no configuration file is used:_
plugins [string]
: Comma seperated string of Babel plugins to use
presets [string]
: Comma seperated string of Babel presets to use
minified [bool]
: Save as much bytes as possible when printing
noComments [bool]
: Write comments to generated output (true by default)
compact [string]
: Do not include superfluous whitespace characters and line terminators (true/false/auto)
verbose [bool]
: Log everything
### Examples
Without a `.babelrc` file, you can simply pass the options like so:
```go-html-template
{{- $transpileOpts := (dict "presets" "@babel/preset-env" "minified" true "noComments" true "compact" "true" ) -}}
{{- $transpiled := resources.Get "scripts/main.js" | transpileJS $transpileOpts -}}
```
If you rather want to use a config file, you can leave out the options in the template.
```go-html-template
{{- $transpiled := resources.Get "scripts/main.js" | transpileJS $transpileOpts -}}
```
Then, you can either create a `.babelrc` in the root of your project, or your can create a `.babel.config.js`.
More information on these configuration files can be found here: [babel configuration](https://babeljs.io/docs/en/configuration)
Finally, you can also pass a custom file path to a config file like so:
```go-html-template
{{- $transpileOpts := (dict "config" "config/my-babel-config.js" ) -}}
{{- $transpiled := resources.Get "scripts/main.js" | transpileJS $transpileOpts -}}
```