Adding optionalCatchBinding to plugins. (babel#521)

Author: kesne

index.js

@@ -414,6 +414,7 @@ exports.parseNoPatch = function(code, options) {
       "importMeta",
       "classPrivateProperties",
       "bigInt",
+      "optionalCatchBinding",
     ],
   };
 

test/non-regression.js

@@ -1845,4 +1845,15 @@ describe("verify", () => {
       []
     );
   });
+
+  it("works with optionalCatchBinding", () => {
+    verifyAndAssertMessages(
+      unpad(`
+        try {} catch {}
+        try {} catch {} finally {}
+      `),
+      {},
+      []
+    );
+  });
 });