Add test for T2765

packages/babel-core/test/fixtures/transformation/misc/regression-2765/actual.js

@@ -0,0 +1,5 @@
+function f() {
+  let g = async () => {
+    this;
+  };
+};

packages/babel-core/test/fixtures/transformation/misc/regression-2765/expected.js

@@ -0,0 +1,12 @@
+function f() {
+  var _this = this;
+
+  let g = function () {
+    var ref = babelHelpers.asyncToGenerator(function* () {
+      _this;
+    });
+    return function g() {
+      return ref.apply(this, arguments);
+    };
+  }();
+};

packages/babel-core/test/fixtures/transformation/misc/regression-2765/options.json

@@ -0,0 +1,8 @@
+{
+  "plugins": [
+    "transform-es2015-arrow-functions",
+    "syntax-async-functions",
+    "transform-async-to-generator",
+    "external-helpers"
+  ]
+}