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node_modules/stylelint/lib/utils/isSharedLineComment.mjs

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+import { isComment, isRoot } from './typeGuards.mjs';
+import getNextNonSharedLineCommentNode from './getNextNonSharedLineCommentNode.mjs';
+import getPreviousNonSharedLineCommentNode from './getPreviousNonSharedLineCommentNode.mjs';
+
+/** @typedef {import('postcss').Node} PostcssNode */
+
+/**
+ * @param {PostcssNode | void} a
+ * @param {PostcssNode | void} b
+ */
+function nodesShareLines(a, b) {
+	const endLine = a && a.source && a.source.end && a.source.end.line;
+	const startLine = b && b.source && b.source.start && b.source.start.line;
+
+	return endLine === startLine;
+}
+
+/**
+ * @param {PostcssNode} node
+ * @returns {boolean}
+ */
+export default function isSharedLineComment(node) {
+	if (!isComment(node)) {
+		return false;
+	}
+
+	const previousNonSharedLineCommentNode = getPreviousNonSharedLineCommentNode(node);
+
+	if (nodesShareLines(previousNonSharedLineCommentNode, node)) {
+		return true;
+	}
+
+	const nextNonSharedLineCommentNode = getNextNonSharedLineCommentNode(node);
+
+	if (nextNonSharedLineCommentNode && nodesShareLines(node, nextNonSharedLineCommentNode)) {
+		return true;
+	}
+
+	const parentNode = node.parent;
+
+	// It's a first child and located on the same line as block start
+	if (
+		parentNode !== undefined &&
+		!isRoot(parentNode) &&
+		parentNode.index(node) === 0 &&
+		node.raws.before !== undefined &&
+		!node.raws.before.includes('\n')
+	) {
+		return true;
+	}
+
+	return false;
+}