1 files changed, 29 insertions, 0 deletions
diff --git a/node_modules/@babel/preset-modules/src/plugins/transform-edge-default-parameters/index.js b/node_modules/@babel/preset-modules/src/plugins/transform-edge-default-parameters/index.js
new file mode 100644
index 00000000..fff50f19
--- /dev/null
+++ b/node_modules/@babel/preset-modules/src/plugins/transform-edge-default-parameters/index.js
@@ -0,0 +1,29 @@
+/**
+ * Converts destructured parameters with default values to non-shorthand syntax.
+ * This fixes the only arguments-related bug in ES Modules-supporting browsers (Edge 16 & 17).
+ * Use this plugin instead of @babel/plugin-transform-parameters when targeting ES Modules.
+ */
+
+export default ({ types: t }) => {
+  const isArrowParent = p =>
+    p.parentKey === "params" &&
+    p.parentPath &&
+    t.isArrowFunctionExpression(p.parentPath);
+
+  return {
+    name: "transform-edge-default-parameters",
+    visitor: {
+      AssignmentPattern(path) {
+        const arrowArgParent = path.find(isArrowParent);
+        if (arrowArgParent && path.parent.shorthand) {
+          // In Babel 7+, there is no way to force non-shorthand properties.
+          path.parent.shorthand = false;
+          (path.parent.extra || {}).shorthand = false;
+
+          // So, to ensure non-shorthand, rename the local identifier so it no longer matches:
+          path.scope.rename(path.parent.key.name);
+        }
+      },
+    },
+  };
+};