DeprecationWarning: Calling an asynchronous function without callback is deprecated.

[nickrttn]

Versions of kyt, node, OS

kyt: 0.9.0-alpha.4
node: v8.3.0
OS: MacOS High Sierra GM

Bug or Feature?

Bug

Current Behavior

On starting kyt dev, the following DeprecationWarning is displayed:

(node:2567) [DEP0013] DeprecationWarning: Calling an asynchronous function without callback is deprecated.
    at maybeCallback (fs.js:119:42)
    at Object.fs.writeFile (fs.js:1268:14)
    at WebpackAssetsManifest.done (/Users/.../Developer/.../project-name/node_modules/kyt/config/webpack.base.js:72:16)

Desired Behavior

It is only a DeprecationWarning, maybe due to using Node.js v8.3 with the updated V8, but I'd like it not to occur when calling an asynchronous function without a callback is removed from Node.js.