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frontend/node_modules/postcss-selector-parser/dist/util/maxNestingDepth.js

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+"use strict";
+
+exports.__esModule = true;
+exports.MAX_NESTING_DEPTH = void 0;
+exports["default"] = resolveMaxNestingDepth;
+/**
+ * The default maximum selector nesting depth allowed when parsing or
+ * serializing a selector. Going beyond this would otherwise recurse deeply
+ * enough to overflow the call stack (CVE-2026-9358 / CWE-674). Real-world
+ * selectors never get anywhere near this, so it acts purely as a safety net
+ * that turns an uncatchable stack overflow into a catchable error.
+ */
+var MAX_NESTING_DEPTH = exports.MAX_NESTING_DEPTH = 256;
+
+/**
+ * Coerce a user-supplied nesting-depth limit into a safe value. Anything that
+ * is not a non-negative safe integer (NaN, Infinity, negative numbers, or a
+ * non-number) would disable or break the guard, so it falls back to the
+ * default.
+ *
+ * @param {unknown} value the limit provided through the `maxNestingDepth` option
+ * @returns {number} a safe, non-negative integer limit
+ */
+function resolveMaxNestingDepth(value) {
+  return Number.isSafeInteger(value) && value >= 0 ? value : MAX_NESTING_DEPTH;
+}