Fix last corner cases for path.normalize

elvisvoer · Feb 13, 2024 · 4b7f403 · 4b7f403
1 parent e2eda3d
commit 4b7f403
Showing 1 changed file with 15 additions and 2 deletions.
diff --git a/lib/b-path.js b/lib/b-path.js
@@ -109,7 +109,16 @@ const posix = {
 
     const handleFragment = () => {
       if (dots === 2) {
-        fragments.pop();
+        if (fragments.length && fragments[fragments.length - 1] !== "..") {
+          // navigate up but don't pop an existing ".."
+          fragments.pop();
+        } else if (absolute) {
+          // top reached and absolute path
+          fragments.push(posix.sep);
+        } else {
+          // top reached and relative path
+          fragments.push("..");
+        }
       }
 
       if (word.length) {
@@ -146,7 +155,11 @@ const posix = {
     handleFragment();
 
     if (fragments.length === 0) {
-      return absolute ? posix.sep : ".";
+      if (absolute) {
+        return posix.sep;
+      }
+
+      return hasTrailingSep ? "./" : ".";
     }
 
     let result = fragments.join(posix.sep);