npm package: @otterlord/astro-critters
Description: 🦔 AstroJS GoogleChromeLabs critters integration. Inline your critical CSS with Astro.
Latest version: 1.1.41

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> **NOTE**
> This package is an archived fork of [astro-critters](https://github.com/astro-community/astro-critters/tree/e33bb56b056264ea4dc8deddfc12ee07067e50f6). This package will not receive updates. Please look for an alternative as soon as possible.

# [astro-critters] 🦔

This **[Astro integration][astro-integration]** brings [critters][critters] to
your Astro project.

Critters is a plugin that inlines your app's [critical CSS] and lazy-loads the
rest.

> **Note**
>
> `astro-critters` will not inline your requests, only your statically generated
> build and pre-rendered routes.

## Installation

There are two ways to add integrations to your project. Let's try the most
convenient option first!

### `astro add` command

Astro includes a CLI tool for adding first party integrations: `astro add`. This
command will:

1. (Optionally) Install all necessary dependencies and peer dependencies
2. (Also optionally) Update your `astro.config.*` file to apply this integration

To install `astro-critters`, run the following from your project directory and
follow the prompts:

Using NPM:

```sh
npx astro add astro-critters
```

Using Yarn:

```sh
yarn astro add astro-critters
```

Using PNPM:

```sh
pnpx astro add astro-critters
```

### Install dependencies manually

First, install the `astro-critters` integration like so:

```
npm install -D -E astro-critters
```

Then, apply this integration to your `astro.config.*` file using the
`integrations` property:

```ts
import critters from "astro-critters";

export default {
	integrations: [critters()],
};
```

## Getting started

Critters will now automatically inline the critical CSS of your HTML files.

You can override any of the default options from the configuration of:

-   [critters](https://github.com/GoogleChromeLabs/critters#usage)

or disable them entirely:

```ts
import critters from "astro-critters";

export default {
	integrations: [
		critters({
			critters: false,
		}),
	],
};
```

If your path is different than `dist` be sure to update it accordingly:

```ts
import critters from "astro-critters";

export default {
	outDir: "./build",
	integrations: [
		critters({
			path: "./build",
		}),
	],
};
```

You can add multiple paths to inline by specifying an array as the `path`
variable.

**`astro.config.ts`**

```ts
import critters from "astro-critters";

export default {
	integrations: [
		critters({
			path: ["./build", "./dist"],
		}),
	],
};
```

You can also provide a map of paths for different input output directories.

**`astro.config.ts`**

```ts
import critters from "astro-critters";

export default {
	integrations: [
		critters({
			path: new Map([["./input", "./output"]]),
		}),
	],
};
```

Or an array of the two.

**`astro.config.ts`**

```ts
import critters from "astro-critters";

export default {
	integrations: [
		critters({
			path: [
				// Inline dist
				"./dist",

				// Inline dist one more time into a different directory
				new Map([["./dist", "./dist-inlined"]]),
			],
		}),
	],
};
```

You can provide a filter to exclude files in your build. A filter can be an
array of regexes or a single match. You can use functions, as well to match on
file names.

**`astro.config.ts`**

```ts
import critters from "astro-critters";

export default {
	integrations: [
		critters({
			exclude: [
				"my-awesome.html",
				(file: string) => file === "./dist/index.html",
			],
		}),
	],
};
```

Set `logger` to `0` if you do not want to see debug messages. Default is `2`.

```ts
import critters from "astro-critters";

export default {
	integrations: [
		critters({
			logger: 0,
		}),
	],
};
```

[astro-critters]: https://npmjs.org/astro-critters
[critters]: https://github.com/GoogleChromeLabs/critters
[astro-integration]: https://docs.astro.build/en/guides/integrations-guide/
[critical css]:
	https://www.smashingmagazine.com/2015/08/understanding-critical-css/

## Changelog

See [CHANGELOG.md](CHANGELOG.md) for a history of changes to this integration.

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