Move to 4 flavor build and tests

javascript/sources/sync.asmjs.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+
+const wrapLib = require('./entry');
+const loadYoga = require('./asmjs-sync');
+
+module.exports = wrapLib(loadYoga());
+
+export type * from './YGEnums.js';
+export type * from './entry';