Fix api docs generation

Gruntfile.js

@@ -247,9 +247,9 @@ module.exports = function( grunt ) {
 				stdout: true,
 				stderr: true
 			},
-			apigen: {
+			apidocs: {
 				command: [
-					'apigen generate -q',
+					'vendor/bin/apigen generate -q',
 					'cd apigen',
 					'php hook-docs.php'
 				].join( '&&' )
@@ -267,7 +267,7 @@ module.exports = function( grunt ) {
 
 		// Clean the directory.
 		clean: {
-			apigen: {
+			apidocs: {
 				src: [ 'wc-apidocs' ]
 			}
 		},
@@ -351,8 +351,8 @@ module.exports = function( grunt ) {
 	]);
 
 	grunt.registerTask( 'docs', [
-		'clean:apigen',
-		'shell:apigen'
+		'clean:apidocs',
+		'shell:apidocs'
 	]);
 
 	// Only an alias to 'default' task.

apigen.neon

@@ -1,53 +1,20 @@
-source: ./
-
 destination: wc-apidocs
-
 templateConfig: apigen/theme-woocommerce/config.neon
-
-# list of scanned file extensions (e.g. php5, phpt...)
 extensions: [php]
-
-# directories and files matching this file mask will not be parsed
+source:
+    - woocommerce.php
+    - includes
 exclude:
     - includes/libraries/
     - includes/api/legacy/
-    - i18n/
-    - node_modules/
-    - wc-apidocs/
-    - tmp/
-    - tests/
-    - .sass-cache/
-    - apigen/
-
-# character set of source files; if you use only one across your files, we recommend you name it
 charset: [UTF-8]
-
-# elements with this name prefix will be considered as the "main project" (the rest will be considered as libraries)
 main: WC
-
-# title of generated documentation
-title: WooCommerce 3.0.x Code Reference
-
-# base url used for sitemap (useful for public doc)
+title: WooCommerce Code Reference
 baseUrl: https://docs.woocommerce.com/wc-apidocs/
-
-# choose ApiGen template theme
 templateTheme: default
-
-# generate documentation for PHP internal classes
 php: false
-
-# generate highlighted source code for elements
 sourceCode: true
-
-# generate tree view of classes, interfaces, traits and exceptions
 tree: true
-
-# generate documentation for deprecated elements
 deprecated: true
-
-# generate list of tasks with @ todo annotation
 todo: true
-
-# add link to ZIP archive of documentation
 download: false

composer.json

@@ -4,6 +4,8 @@
   "homepage": "https://woocommerce.com/",
   "type": "wordpress-plugin",
   "license": "GPL-3.0-or-later",
+  "prefer-stable": true,
+  "minimum-stability": "dev",
   "require": {
     "composer/installers": "~1.2"
   },
@@ -14,7 +16,9 @@
     "woocommerce/woocommerce-git-hooks": "*",
     "woocommerce/woocommerce-sniffs": "*",
     "wimg/php-compatibility": "^8.0",
-    "dealerdirect/phpcodesniffer-composer-installer": "^0.4.3"
+    "dealerdirect/phpcodesniffer-composer-installer": "^0.4.3",
+    "apigen/apigen": "^4",
+    "nette/utils": "~2.3.0"
   },
   "scripts": {
     "pre-update-cmd": [