MZ - Modernize node.js

Modernize node.js to current ECMAScript specifications! node.js will not update their API to ES6+ for a while. This library is a wrapper for various aspects of node.js' API.

Installation and Usage

Set mz as a dependency and install it.

npm i mz

Then prefix the relevant require()s with mz/:

var fs = require('mz/fs')

fs.exists(__filename).then(function (exists) {
  if (exists) // do something
})

Personally, I use this with generator-based control flow libraries such as co so I don't need to use implementation-specific wrappers like co-fs.

var co = require('co')
var fs = require('mz/fs')

co(function* () {
  if (yield fs.exists(__filename)) // do something
})()

Promisification

Many node methods are converted into promises. Any properties that are deprecated or aren't asynchronous will simply be proxied. The modules wrapped are:

• child_process
• crypto
• dns
• fs
• readline
• zlib

var exec = require('mz/child_process').exec

exec('node --version').then(function (stdout) {
  console.log(stdout)
})

Promise Engine

If you've installed bluebird, bluebird will be used. mz does not install bluebird for you.

Otherwise, if you're using a node that has native v8 Promises (v0.11.13+), then that will be used.

Otherwise, this library will crash the process and exit, so you might as well install bluebird as a dependency!

FAQ

Can I use this in production?

If you do, you should probably install bluebird as native v8 promises are still pretty raw.

Will this make my app faster?

Nope, probably slower actually.

Can I add more features?

Sure. Open an issue.

Currently, the plans are to eventually support:

• ECMAScript7 Streams