take event from multiple channels

takeFromChannels.js

// From https://github.com/kuy/redux-tower/commit/9619bb7f65f147640ee8e15ecc8d26dae1b537fd#diff-f38699c88139ae09699a6830074a2af5R30

function takeFromChannels(channels) {
  return race(
    Object.keys(channels)
      .map(name => ([name, channels[name]]))
      .reduce((prev, [name, ch]) => ({ ...prev, [name]: take(ch) }), {})
  );
}