Fix objectSpread2 backward compatibility (#10170)

2019-07-06 09:48:36 +02:00
parent bff79e198a
commit 24dde2e8e8
2 changed files with 8 additions and 2 deletions
--- a/packages/babel-plugin-proposal-object-rest-spread/src/index.js
+++ b/packages/babel-plugin-proposal-object-rest-spread/src/index.js
@@ -452,7 +452,13 @@ export default declare((api, opts) => {
        if (loose) {
          helper = getExtendsHelper(file);
        } else {
-          helper = file.addHelper("objectSpread2");
+          try {
+            helper = file.addHelper("objectSpread2");
+          } catch {
+            // objectSpread2 has been introduced in v7.5.0
+            // We have to maintain backward compatibility.
+            helper = file.addHelper("objectSpread");
+          }
        }

        path.replaceWith(t.callExpression(helper, args));