fix: register inserted importDefaultSpecifier

babel · Jul 5, 2019 · c301efb · c301efb
1 parent bff79e1
commit c301efb
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Showing 4 changed files with 11 additions and 0 deletions.
diff --git a/packages/babel-plugin-proposal-export-default-from/src/index.js b/packages/babel-plugin-proposal-export-default-from/src/index.js
@@ -35,6 +35,11 @@ export default declare(api => {
 
         path.replaceWithMultiple(nodes);
       },
+      ImportDefaultSpecifier(path) {
+        if (!path.scope.hasOwnBinding(path.node.local.name)) {
+          path.scope.registerDeclaration(path.parentPath);
+        }
+      },
     },
   };
 });
diff --git a/...in-proposal-export-default-from/test/fixtures/export-default/default-typescript/input.mjs b/...in-proposal-export-default-from/test/fixtures/export-default/default-typescript/input.mjs
@@ -0,0 +1 @@
+export foo from "bar";
diff --git a/...proposal-export-default-from/test/fixtures/export-default/default-typescript/options.json b/...proposal-export-default-from/test/fixtures/export-default/default-typescript/options.json
@@ -0,0 +1,3 @@
+{
+  "plugins": ["proposal-export-default-from", "transform-typescript"]
+}
diff --git a/...n-proposal-export-default-from/test/fixtures/export-default/default-typescript/output.mjs b/...n-proposal-export-default-from/test/fixtures/export-default/default-typescript/output.mjs
@@ -0,0 +1,2 @@
+import _foo from "bar";
+export { _foo as foo };