ip-bigint - npm Package Compare versions

Comparing version 7.0.0 to 7.0.1

index.js

 export const max4 = 2n ** 32n - 1n;
 export const max6 = 2n ** 128n - 1n;
-const emptyPartsRe = /\b:?(?:0+:?)+/;
 const isIP = ip => ip.includes(":") ? 6 : ip.includes(".") ? 4 : 0;
@@ -92,4 +91,5 @@
       }
+      ip = compressIPv6(ip.split(":"));
     } else {
-      ip = parts.map(n => n.toString(16)).join(":");
+      ip = compressIPv6(parts.map(n => n.toString(16)));
     }
@@ -101,3 +101,3 @@
 
-    return ip.replace(emptyPartsRe, "::");
+    return ip;
   }
@@ -109,1 +109,32 @@ }
 }
+
+// take the longest or first sequence of "0" segments and replace it with "::"
+function compressIPv6(parts) {
+  let longestSequence;
+  let currentSequence;
+  for (const [index, part] of parts.entries()) {
+    if (part === "0") {
+      if (!currentSequence) {
+        currentSequence = new Set([index]);
+      } else {
+        currentSequence.add(index);
+      }
+    } else {
+      if (currentSequence) {
+        if (!longestSequence) {
+          longestSequence = currentSequence;
+        } else if (currentSequence.size > longestSequence.size) {
+          longestSequence = currentSequence;
+        }
+        currentSequence = null;
+      }
+    }
+  }
+  if (!longestSequence && currentSequence) longestSequence = currentSequence;
+
+  for (const index of longestSequence || []) {
+    parts[index] = ":";
+  }
+
+  return parts.filter(Boolean).join(":").replace(/:{2,}/, "::");
+}

package.json

 {
   "name": "ip-bigint",
-  "version": "7.0.0",
+  "version": "7.0.1",
   "description": "Convert IPv4 and IPv6 addresses to native BigInt and vice-versa",
@@ -5,0 +5,0 @@ "author": "silverwind <[e-mail]>",

No alert changes

Improved metrics

Total package byte prevSize

5729

increased by17.49%

Lines of code

118

increased by31.11%

No dependency changes