Parse async do expressions (#13043)

* parse async do expressions

* add test cases

* update test fixtures

* chore: add syntax-async-do-expressions

* generater support

* fix: do not transform async do expressions

* chore: add asyncDoExpressions to missing plugin helpers

* update ast types

* add more test cases

* throw when asyncDoExpressions is enabled but not doExpressions

* avoid add parentheses for async do expressions

* address review comments

* chore: update parser typings

packages/babel-plugin-syntax-async-do-expressions/src/index.ts

@@ -0,0 +1,13 @@
+import { declare } from "@babel/helper-plugin-utils";
+
+export default declare(api => {
+  api.assertVersion(7);
+
+  return {
+    name: "syntax-async-do-expressions",
+
+    manipulateOptions(opts, parserOpts) {
+      parserOpts.plugins.push("asyncDoExpressions", "doExpressions");
+    },
+  };
+});