babel-core/lib/babel/transformation/transformers/other/bluebird-coroutines.js

Turn ES6 code into readable vanilla ES5 with source maps

"use strict";

var remapAsyncToGenerator = require("../../helpers/remap-async-to-generator");
var t                     = require("../../../types");

exports.manipulateOptions = function (opts) {
  opts.experimental = true;
  opts.blacklist.push("regenerator");
};

exports.optional = true;

exports.Function = function (node, parent, scope, file) {
  if (!node.async || node.generator) return;

  return remapAsyncToGenerator(
    node,
    t.memberExpression(file.addImport("bluebird", null, true), t.identifier("coroutine")),
    scope
  );
};