core: Flesh out Prettier config package.

packages/prettier-config/LICENSE.txt

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+The MIT License (MIT)
+
+Copyright (c) 2025 Authentik Security, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
+associated documentation files (the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish, distribute,
+sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial
+portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
+NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
+OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

packages/prettier-config/README.md

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+# `@goauthentik/prettier-config`
+
+This package contains the Prettier configuration used by authentik.
+While it is possible to use this configuration outside of our projects,
+you may find that it is not as useful as other popular configurations.

packages/prettier-config/config.js

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+/**
+ * authentik Prettier configuration.
+ *
+ * @type {import("prettier").Config}
+ * @internal
+ */
+export const AuthentikPrettierConfig = {
+    arrowParens: "always",
+    bracketSpacing: true,
+    embeddedLanguageFormatting: "auto",
+    htmlWhitespaceSensitivity: "css",
+    insertPragma: false,
+    jsxSingleQuote: false,
+    printWidth: 100,
+    proseWrap: "preserve",
+    quoteProps: "consistent",
+    requirePragma: false,
+    semi: true,
+    singleQuote: false,
+    tabWidth: 4,
+    trailingComma: "all",
+    useTabs: false,
+    vueIndentScriptAndStyle: false,
+    plugins: ["prettier-plugin-packagejson", "@trivago/prettier-plugin-sort-imports"],
+    importOrder: ["^(@?)lit(.*)$", "\\.css$", "^@goauthentik/api$", "^[./]"],
+    importOrderSeparation: true,
+    importOrderSortSpecifiers: true,
+    importOrderParserPlugins: ["typescript", "jsx", "classProperties", "decorators-legacy"],
+    overrides: [
+        {
+            files: "tsconfig.json",
+            options: {
+                trailingComma: "none",
+            },
+        },
+        {
+            files: "package.json",
+            options: {
+                packageSortOrder: [
+                    // ---
+                    "name",
+                    "version",
+                    "description",
+                    "scripts",
+                    "devDependencies",
+                    "dependencies",
+                ],
+            },
+        },
+    ],
+};

packages/prettier-config/format.js

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+import { format } from "prettier";
+import { AuthentikPrettierConfig } from "./config.js";
+
+/**
+ * Format using Prettier.
+ *
+ * Defaults to using the TypeScript parser.
+ *
+ * @category Formatting
+ * @param {string} fileContents The contents of the file to format.
+ *
+ * @returns {Promise<string>} The formatted file contents.
+ */
+export function formatWithPrettier(fileContents) {
+    return format(fileContents, {
+        ...AuthentikPrettierConfig,
+        parser: "typescript",
+    });
+}

packages/prettier-config/index.js

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+import { AuthentikPrettierConfig } from "./config.js";
+
+export * from "./config.js";
+export * from "./format.js";
+
+export default AuthentikPrettierConfig;

packages/prettier-config/package.json

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+{
+    "name": "@goauthentik/prettier-config",
+    "version": "1.0.0",
+    "description": "authentik's Prettier config",
+    "type": "module",
+    "license": "MIT",
+    "exports": {
+        "./package.json": "./package.json",
+        ".": {
+            "import": "./index.js",
+            "types": "./out/index.d.ts"
+        }
+    },
+    "types": "./out/index.d.ts",
+    "peerDependencies": {
+        "@trivago/prettier-plugin-sort-imports": "^4.3.0",
+        "prettier-plugin-organize-imports": "^4.1.0",
+        "prettier": "^3.5.3",
+        "prettier-plugin-packagejson": "^2.5.10"
+    },
+    "engines": {
+        "node": ">=20.11"
+    },
+    "publishConfig": {
+        "access": "public"
+    }
+}

packages/prettier-config/tsconfig.json

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+{
+    "extends": "@goauthentik/tsconfig",
+    "compilerOptions": {
+        "checkJs": true,
+        "emitDeclarationOnly": true
+    }
+}