Disallow duplicated AST nodes (#11807)

2020-07-14 09:32:16 -04:00
parent ffb42488ba
commit 5dd64ecc4a
24 changed files with 85 additions and 62 deletions
--- a/packages/babel-helper-create-class-features-plugin/src/misc.js
+++ b/packages/babel-helper-create-class-features-plugin/src/misc.js
@@ -72,8 +72,14 @@ export function injectInitialization(path, constructor, nodes, renamer) {
  if (isDerived) {
    const bareSupers = [];
    constructor.traverse(findBareSupers, bareSupers);
+    let isFirst = true;
    for (const bareSuper of bareSupers) {
-      bareSuper.insertAfter(nodes);
+      if (isFirst) {
+        bareSuper.insertAfter(nodes);
+        isFirst = false;
+      } else {
+        bareSuper.insertAfter(nodes.map(n => t.cloneNode(n)));
+      }
    }
  } else {
    constructor.get("body").unshiftContainer("body", nodes);