module.exports = {
  plugins: [
    require("babel-plugin-syntax-async-functions"),
    require("babel-plugin-syntax-async-generators"),
    require("babel-plugin-transform-es2015-block-scoping"),
    require("babel-plugin-transform-es2015-for-of"),
    require("regenerator-transform")
  ]
};

@@ -279,16 +279,24 @@
 nsform%22)
+.default
 %0A  %5D%0A%7D;%0A

Use .default since regenerator-transform doesn't set module.exports.