path: refactor for less indentation

This just switches the statements in a way that it reduces the
overall indentation. The function has a very deep indentation in
general and this should improve the readability.

PR-URL: #26917
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>

Author: BridgeAR

lib/path.js

@@ -165,63 +165,63 @@ const win32 = {
       const code = path.charCodeAt(0);
 
       // Try to match a root
-      if (len > 1) {
+      if (len === 1) {
         if (isPathSeparator(code)) {
-          // Possible UNC root
-
-          // If we started with a separator, we know we at least have an
-          // absolute path of some kind (UNC or otherwise)
+          // `path` contains just a path separator
+          rootEnd = 1;
           isAbsolute = true;
+        }
+      } else if (isPathSeparator(code)) {
+        // Possible UNC root
 
-          if (isPathSeparator(path.charCodeAt(1))) {
-            // Matched double path separator at beginning
-            let j = 2;
-            let last = j;
-            // Match 1 or more non-path separators
-            while (j < len && !isPathSeparator(path.charCodeAt(j))) {
+        // If we started with a separator, we know we at least have an
+        // absolute path of some kind (UNC or otherwise)
+        isAbsolute = true;
+
+        if (isPathSeparator(path.charCodeAt(1))) {
+          // Matched double path separator at beginning
+          let j = 2;
+          let last = j;
+          // Match 1 or more non-path separators
+          while (j < len && !isPathSeparator(path.charCodeAt(j))) {
+            j++;
+          }
+          if (j < len && j !== last) {
+            const firstPart = path.slice(last, j);
+            // Matched!
+            last = j;
+            // Match 1 or more path separators
+            while (j < len && isPathSeparator(path.charCodeAt(j))) {
               j++;
             }
             if (j < len && j !== last) {
-              const firstPart = path.slice(last, j);
               // Matched!
               last = j;
-              // Match 1 or more path separators
-              while (j < len && isPathSeparator(path.charCodeAt(j))) {
+              // Match 1 or more non-path separators
+              while (j < len && !isPathSeparator(path.charCodeAt(j))) {
                 j++;
               }
-              if (j < len && j !== last) {
-                // Matched!
-                last = j;
-                // Match 1 or more non-path separators
-                while (j < len && !isPathSeparator(path.charCodeAt(j))) {
-                  j++;
-                }
-                if (j === len || j !== last) {
-                  // We matched a UNC root
-                  device = `\\\\${firstPart}\\${path.slice(last, j)}`;
-                  rootEnd = j;
-                }
+              if (j === len || j !== last) {
+                // We matched a UNC root
+                device = `\\\\${firstPart}\\${path.slice(last, j)}`;
+                rootEnd = j;
               }
             }
-          } else {
-            rootEnd = 1;
-          }
-        } else if (isWindowsDeviceRoot(code) &&
-                   path.charCodeAt(1) === CHAR_COLON) {
-          // Possible device root
-          device = path.slice(0, 2);
-          rootEnd = 2;
-          if (len > 2 && isPathSeparator(path.charCodeAt(2))) {
-            // Treat separator following drive name as an absolute path
-            // indicator
-            isAbsolute = true;
-            rootEnd = 3;
           }
+        } else {
+          rootEnd = 1;
+        }
+      } else if (isWindowsDeviceRoot(code) &&
+                  path.charCodeAt(1) === CHAR_COLON) {
+        // Possible device root
+        device = path.slice(0, 2);
+        rootEnd = 2;
+        if (len > 2 && isPathSeparator(path.charCodeAt(2))) {
+          // Treat separator following drive name as an absolute path
+          // indicator
+          isAbsolute = true;
+          rootEnd = 3;
         }
-      } else if (isPathSeparator(code)) {
-        // `path` contains just a path separator
-        rootEnd = 1;
-        isAbsolute = true;
       }
 
       if (device.length > 0) {