feat(prettier-config): add index.js entrypoint

This was done so that the base config is extensible which will allow
other projects to install any prettier plugins that might be relevant
for their project, e.g. prettier-plugin-tailwind.

README.md

@@ -251,7 +251,7 @@ Include the commitlint preset in your `package.json`:
 Include the shared Prettier config in your `package.json`:
 
 ```json
-"prettier": "@siemens/prettier-config/.prettierrc.json",
+"prettier": "@siemens/prettier-config",
 ```
 
 ### ESLint Plugin

package.json

@@ -56,7 +56,7 @@
       "./commitlint-config/.commitlintrc.js"
     ]
   },
-  "prettier": "./prettier-config/.prettierrc.json",
+  "prettier": "./prettier-config/index.js",
   "workspaces": [
     "commitlint-config",
     "eslint-config-angular",

prettier-config/index.js

@@ -0,0 +1,39 @@
+/**
+ * Copyright Siemens 2024.
+ * SPDX-License-Identifier: MIT
+ *
+ /
+
+ /**
+ * @type { import("prettier").Config }
+ */
+const config = {
+  printWidth: 100,
+  trailingComma: 'none',
+  arrowParens: 'avoid',
+  htmlWhitespaceSensitivity: 'strict',
+  quoteProps: 'preserve',
+  singleQuote: true,
+  overrides: [
+    {
+      files: '*.html',
+      options: {
+        parser: 'angular'
+      }
+    },
+    {
+      files: 'index.html',
+      options: {
+        parser: 'html'
+      }
+    },
+    {
+      files: '*.json5',
+      options: {
+        singleQuote: false
+      }
+    }
+  ]
+};
+
+export default config;

prettier-config/package.json

@@ -2,14 +2,14 @@
   "name": "@siemens/prettier-config",
   "version": "0.0.0-development",
   "description": "Configuration for Prettier.",
-  "files": [
-    "*.json",
-    "*.md"
-  ],
   "repository": {
     "type": "git",
     "url": "git+ssh://git@github.com/siemens/lint.git"
   },
+  "exports": {
+    ".": "./index.js",
+    "./prettierrc.json": "./.prettierrc.json"
+  },
   "author": {
     "name": "Siemens",
     "email": "opensource@siemens.com"
@@ -24,7 +24,11 @@
     "access": "public"
   },
   "license": "MIT",
+  "type": "module",
   "peerDependencies": {
     "prettier": "^3.0.0"
+  },
+  "devDependencies": {
+    "prettier": "3.4.2"
   }
 }