Async Await Error Handling in JavaScript

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Async Functions in JavaScript

June 26, 2019

Async functions were introduced in the 2017 edition of the JavaScript language spec. Async functions differ from normal JavaScript functions in 2 major ways:

What's New in Mongoose 5.6.0: Immutable Properties

June 18, 2019

Mongoose 5.6.0 was released last week. This new release has 12 new features, 2 performance improvements, and several docs improvements. The most interesting new feature is immutable properties. The idea is that marking a property as immutable means that property cannot change after the document is created.

The 80/20 Guide to JavaScript Arrays

June 11, 2019

JavaScript arrays are an essential part of the language. Fundamentally, an array is a value that stores an ordered list of other values. But JavaScript arrays come with a lot of nuances and surprises. In this article, I'll provide an overview of what you need to know about JavaScript arrays.

Testing Vue Apps with Puppeteer and Mocha

June 05, 2019

Puppeteer is a powerful automation library for Google Chrome. With Puppeteer, you can launch a Chrome browser that you have full control over from Node.js. This makes UI testing easy: your client-side app runs in a real browser, no need to worry about the painful quirks of Jest attempting to mimic a browser in Node.js. Puppeteer runs in headless mode by default, which means the Chrome window isn't visible. But you can still take screenshots in headless mode, or you can disable headless mode and watch your tests click through your app.

The 80/20 Guide to JSON.stringify in JavaScript

May 28, 2019

The JSON.stringify() function is the canonical way to convert a JavaScript object to JSON. Many JavaScript frameworks use JSON.stringify() under the hood: Express' res.json(), Axios' post(), and Webpack stats all call JSON.stringify(). In this article, I'll provide a practical overview of JSON.stringify(), including error cases.

The 80/20 Guide to Promises in Node.js

May 22, 2019

Promises are a built-in concurrency primitive that's been part of JavaScript since ES6 in 2015. The Promise class has been included in Node.js since v4.0.0. That means, unless you're on an unmaintained version of Node.js, you can use promises without any outside libraries.

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