Fix function-calc-no-unspaced-operator TypeError on empty calc() (#…

…6634) * function-calc-no-unspaced-operator: fix exception on empty calc * Update lib/rules/function-calc-no-unspaced-operator/index.js Co-authored-by: Richard Hallows <jeddy3@users.noreply.github.com> * Create silver-owls-develop.md --------- Co-authored-by: Richard Hallows <jeddy3@users.noreply.github.com>
stylelint · Feb 10, 2023 · c64065e · c64065e
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commit c64065e
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diff --git a/.changeset/silver-owls-develop.md b/.changeset/silver-owls-develop.md
@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: `function-calc-no-unspaced-operator` TypeError on empty `calc()`
diff --git a/lib/rules/function-calc-no-unspaced-operator/__tests__/index.js b/lib/rules/function-calc-no-unspaced-operator/__tests__/index.js
@@ -225,6 +225,9 @@ testRule({
 		{
 			code: 'a { top: calc(10px/var(--foo)); }',
 		},
+		{
+			code: 'a { padding: calc(); }',
+		},
 	],
 
 	reject: [

diff --git a/lib/rules/function-calc-no-unspaced-operator/index.js b/lib/rules/function-calc-no-unspaced-operator/index.js
@@ -313,6 +313,9 @@ const rule = (primary, _secondaryOptions, context) => {
 				if (node.type !== 'function' || node.value.toLowerCase() !== 'calc') return;
 
 				const { nodes } = node;
+
+				if (!nodes.length) return;
+
 				let foundOperatorNode = false;
 
 				for (const [nodeIndex, currNode] of nodes.entries()) {