Refactor block-no-empty rule

lib/rules/block-no-empty/index.js

@@ -49,25 +49,17 @@ const rule = (primary, secondaryOptions) => {
 		root.walkRules(check);
 		root.walkAtRules(check);
 
+		/** @typedef {import('postcss').Rule | import('postcss').AtRule} Statement */
+
 		/**
-		 * @param {import('postcss').Rule | import('postcss').AtRule} statement
+		 * @param {Statement} statement
 		 */
 		function check(statement) {
 			if (!hasBlock(statement)) {
 				return;
 			}
 
-			const children = statement.nodes.filter((child) => {
-				if (isComment(child)) {
-					if (ignoreComments) return false;
-
-					if (isStylelintCommand(child)) return false;
-				}
-
-				return true;
-			});
-
-			if (children.length > 0) {
+			if (hasNotableChildren(statement)) {
 				return;
 			}
 
@@ -86,6 +78,22 @@ const rule = (primary, secondaryOptions) => {
 				ruleName,
 			});
 		}
+
+		/**
+		 * @param {Statement} statement
+		 * @returns {boolean}
+		 */
+		function hasNotableChildren(statement) {
+			return statement.nodes.some((child) => {
+				if (isComment(child)) {
+					if (ignoreComments) return false;
+
+					if (isStylelintCommand(child)) return false;
+				}
+
+				return true;
+			});
+		}
 	};
 };