chore(refactor): make patching child vnode more readable (#992)

Co-authored-by: wangzhangsheng(cary) <wb-wzs728893@alibaba-inc.com>
3 years ago · 044dfef8c3
parent 9e2cecd249
commit 044dfef8c3
1 changed files with 14 additions and 14 deletions
--- a/src/init.ts
+++ b/src/init.ts
@ -355,20 +355,20 @@ export function init(
        newStartVnode = newCh[++newStartIdx];
      }
    }
-    if (oldStartIdx <= oldEndIdx || newStartIdx <= newEndIdx) {
-      if (oldStartIdx > oldEndIdx) {
-        before = newCh[newEndIdx + 1] == null ? null : newCh[newEndIdx + 1].elm;
-        addVnodes(
-          parentElm,
-          before,
-          newCh,
-          newStartIdx,
-          newEndIdx,
-          insertedVnodeQueue
-        );
-      } else {
-        removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
-      }
+
+    if (newStartIdx <= newEndIdx) {
+      before = newCh[newEndIdx + 1] == null ? null : newCh[newEndIdx + 1].elm;
+      addVnodes(
+        parentElm,
+        before,
+        newCh,
+        newStartIdx,
+        newEndIdx,
+        insertedVnodeQueue
+      );
+    }
+    if (oldStartIdx <= oldEndIdx) {
+      removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
    }
  }