modified

node_modules/validator/es/lib/isIPRange.js

@@ -0,0 +1,47 @@
+import assertString from './util/assertString';
+import isIP from './isIP';
+var subnetMaybe = /^\d{1,3}$/;
+var v4Subnet = 32;
+var v6Subnet = 128;
+export default function isIPRange(str) {
+  var version = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
+  assertString(str);
+  var parts = str.split('/'); // parts[0] -> ip, parts[1] -> subnet
+
+  if (parts.length !== 2) {
+    return false;
+  }
+
+  if (!subnetMaybe.test(parts[1])) {
+    return false;
+  } // Disallow preceding 0 i.e. 01, 02, ...
+
+
+  if (parts[1].length > 1 && parts[1].startsWith('0')) {
+    return false;
+  }
+
+  var isValidIP = isIP(parts[0], version);
+
+  if (!isValidIP) {
+    return false;
+  } // Define valid subnet according to IP's version
+
+
+  var expectedSubnet = null;
+
+  switch (String(version)) {
+    case '4':
+      expectedSubnet = v4Subnet;
+      break;
+
+    case '6':
+      expectedSubnet = v6Subnet;
+      break;
+
+    default:
+      expectedSubnet = isIP(parts[0], '6') ? v6Subnet : v4Subnet;
+  }
+
+  return parts[1] <= expectedSubnet && parts[1] >= 0;
+}