From ec5731ff0d12ab013cb1036e198b14eea8221dea Mon Sep 17 00:00:00 2001
From: Thiago Arrais <thiago.souza@serpro.gov.br>
Date: Wed, 11 Sep 2019 13:49:38 -0300
Subject: [PATCH] a first try

---
 packages/babel-polyfill-provider-corejs3/src/index.js |  9 +++++++++
 .../fixtures/usage-pure/modules-namespaced/input.mjs  |  2 ++
 .../usage-pure/modules-namespaced/options.json        | 11 +++++++++++
 .../fixtures/usage-pure/modules-namespaced/output.mjs |  2 ++
 4 files changed, 24 insertions(+)
 create mode 100644 packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/input.mjs
 create mode 100644 packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/options.json
 create mode 100644 packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/output.mjs

diff --git a/packages/babel-polyfill-provider-corejs3/src/index.js b/packages/babel-polyfill-provider-corejs3/src/index.js
index 6c3a76df..1162743d 100644
--- a/packages/babel-polyfill-provider-corejs3/src/index.js
+++ b/packages/babel-polyfill-provider-corejs3/src/index.js
@@ -124,6 +124,15 @@ export default ((
     },
 
     usagePure(meta, utils, path) {
+      const isNamespaced = path => {
+        if (!path.node) return false;
+        const binding = path.scope.getBinding(path.node.name);
+        if (!binding) return false;
+        return binding.path.isImportNamespaceSpecifier();
+      };
+
+      if (isNamespaced(path.get("object"))) return false;
+
       if (meta.kind === "in") {
         if (meta.key === "Symbol.iterator") {
           path.replaceWith(
diff --git a/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/input.mjs b/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/input.mjs
new file mode 100644
index 00000000..7962c3d2
--- /dev/null
+++ b/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/input.mjs
@@ -0,0 +1,2 @@
+import * as bar from "bar";
+bar.map();
diff --git a/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/options.json b/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/options.json
new file mode 100644
index 00000000..a00d7e0c
--- /dev/null
+++ b/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/options.json
@@ -0,0 +1,11 @@
+{
+  "plugins": [
+    [
+      "@babel/plugin-inject-polyfills",
+      {
+        "method": "usage-pure",
+        "providers": ["@@/corejs3"]
+      }
+    ]
+  ]
+}
\ No newline at end of file
diff --git a/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/output.mjs b/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/output.mjs
new file mode 100644
index 00000000..7962c3d2
--- /dev/null
+++ b/packages/babel-polyfill-provider-corejs3/test/fixtures/usage-pure/modules-namespaced/output.mjs
@@ -0,0 +1,2 @@
+import * as bar from "bar";
+bar.map();