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Add HUGO_PUBLISHDIR to the Node environment

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So you can do  `process.env.HUGO_PUBLISHDIR` in your `postcss.config.js` to figure out where Hugo publishes
its files.

Note that the value will always be an absolute file path and will point to a directory on disk even when running `hugo server` in memory mode.

If you write to this folder from PostCSS when running the server, you could run the server with one of these flags:

```
hugo server --renderToDisk
hugo server --renderStaticToDisk
```

Fixes #10554
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Bjørn Erik Pedersen 2022-12-22 09:43:53 +01:00
parent ddb5fd6b04
commit 8f0fcba6bd
1 changed files with 27 additions and 0 deletions
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content/en/hugo-pipes/postprocess.md
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@ -68,3 +68,30 @@ Note that in the example above, the "CSS purge step" will only be applied to the
{{ end }} {{ end }}
<link href="{{ $css.RelPermalink }}" rel="stylesheet" /> <link href="{{ $css.RelPermalink }}" rel="stylesheet" />
``` ```
## Hugo Environment variables available in PostCSS
These are the environment variables Hugo passes down to PostCSS (and Babel), which allows you do do `process.env.HUGO_ENVIRONMENT === 'production' ? [autoprefixer] : []` and similar:
PWD
: The absolute path to the project working directory.
HUGO_ENVIRONMENT (and the alias HUGO_ENV)
: The value e.g. set with `hugo -e production` (defaults to `production` for `hugo` and `development` for `hugo server`).
HUGO_PUBLISHDIR
: {{ new-in "0.109.0" }} The absolute path to the publish directory (the `public` directory). Note that the value will always point to a directory on disk even when running `hugo server` in memory mode. If you write to this folder from PostCSS when running the server, you could run the server with one of these flags:
```
hugo server --renderToDisk
hugo server --renderStaticToDisk
```
Also, Hugo will add environment variables for all files mounted below `assets/_jsconfig`. A default mount will be set up with files in the project root matching this regexp: `(babel|postcss|tailwind)\.config\.js`.
These will get environment variables named on the form `HUGO_FILE_:filename:` where `:filename:` is all upper case with periods replaced with underscore. This allows you do do this and similar:
```js
let tailwindConfig = process.env.HUGO_FILE_TAILWIND_CONFIG_JS || './tailwind.config.js';
```