Fields: Export the package stylesheet

packages/fields/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Enhancements
+
+-   Export `build-style/*`, so the stylesheet can be imported as `@wordpress/fields/build-style/style.css` [#81769](https://github.com/WordPress/gutenberg/pull/81769)).
+
 ### Internal
 
 -   Point tsconfig references at split dependencies' build projects. ([#81509](https://github.com/WordPress/gutenberg/pull/81509), [#81514](https://github.com/WordPress/gutenberg/pull/81514))

packages/fields/README.md

@@ -10,6 +10,36 @@ Install the module
 npm install @wordpress/fields --save
 ```
 
+## Setup
+
+This package requires CSS from this package and from multiple dependency packages.
+
+### Within WordPress
+
+To ensure proper load order, add the `wp-components` stylesheet as a dependency of your plugin's stylesheet. See [wp_enqueue_style documentation](https://developer.wordpress.org/reference/functions/wp_enqueue_style/#parameters) for how to specify dependencies.
+
+WordPress registers no handle for this package's own stylesheet, so load it with your plugin's script:
+
+```js
+import '@wordpress/fields/build-style/style.css';
+```
+
+### Outside WordPress
+
+Install and load these stylesheets in your application:
+
+```bash
+npm install @wordpress/fields @wordpress/theme @wordpress/components
+```
+
+```js
+import '@wordpress/theme/design-tokens.css';
+import '@wordpress/components/build-style/style.css';
+import '@wordpress/fields/build-style/style.css';
+```
+
+RTL versions of the stylesheets are available in the same paths, but with `-rtl` appended to the filename (`style-rtl.css`). The design tokens stylesheet is universal and does not have a separate RTL version.
+
 ## Usage
 
 <!-- START TOKEN(Autogenerated API docs) -->

packages/fields/package.json

@@ -38,7 +38,8 @@
 			"import": "./build-module/index.mjs",
 			"require": "./build/index.cjs"
 		},
-		"./package.json": "./package.json"
+		"./package.json": "./package.json",
+		"./build-style/*": "./build-style/*"
 	},
 	"types": "build-types",
 	"sideEffects": [