Add minimum package age check for pypi

packages/safe-chain/src/registryProxy/interceptors/minimumPackageAgeExclusions.js

@@ -0,0 +1,33 @@
+import { getMinimumPackageAgeExclusions, getEcoSystem } from "../../config/settings.js";
+import { getEquivalentPackageNames } from "../../scanning/packageNameVariants.js";
+
+/**
+ * Checks if a package name matches an exclusion pattern.
+ * Supports trailing wildcard (*) for prefix matching.
+ * @param {string} packageName
+ * @param {string} pattern
+ * @returns {boolean}
+ */
+export function matchesExclusionPattern(packageName, pattern) {
+  if (pattern.endsWith("/*")) {
+    return packageName.startsWith(pattern.slice(0, -1));
+  }
+  return packageName === pattern;
+}
+
+/**
+ * @param {string | undefined} packageName
+ * @returns {boolean}
+ */
+export function isExcludedFromMinimumPackageAge(packageName) {
+  if (!packageName) {
+    return false;
+  }
+
+  const exclusions = getMinimumPackageAgeExclusions();
+  const candidateNames = getEquivalentPackageNames(packageName, getEcoSystem());
+
+  return exclusions.some((pattern) =>
+    candidateNames.some((name) => matchesExclusionPattern(name, pattern))
+  );
+}