JavaScript

How to avoid TypeError: Cannot read property ___ of undefined using Array.filter(Boolean) tl;dr: Array.filter(Boolean) filters out falsy values (null, undefined, 0, false, '') and avoids Cannot read property of undefined errors. Table of contents: ...

Detecting Array vs Object in JavaScript with examples tl;dr To detect if something is an Array in JavaScript, use Array.isArray(somethingObjectToCheck). This post is a quarter useful, quarter history lesson, half quirky JavaScript exploration. Table of contents: ...

If you want to ship, use the tools you know. — A lot of people Let’s apply that principle: I’m building Post Frequency/Accountable Blogging, I’m familiar with Vue and Node-based backends. Netlify makes frontend deployments trivial and I’ve settled on Dokku for ...

How I created the buying mechanism for the Sequelize ES6 Cheatsheet using checkoutpage.co and sprinkles of vanilla JavaScript. This strictly isn’t a paywall, it’s all client-side and doesn’t check much. In principle you can display the whole things using a bit of CSS ...

Here’s how I get productive for JavaScript/Node on Mac OS. It includes iTerm2, zsh, Node, Visual Studio Code and some git commands. ...

Enhancing generators for ES6 in the Sequelize CLI This is the story of my discovery of ES6-class style model definitions with Sequelize (see Using ES6 classes for Sequelize 4 models). The realisation that the current Sequelize CLI model generator didn’t support it (as is e ...

Last Monday (22 October 2018) GitHub was going 💥, and scheduled content on Code with Hugo wasn’t going live. For context, the blog’s setup is documented in “Switching the lights on: Hugo vs Hugo config files”. tl;dr (as is relevant to this post) Cloudflare DNS + CDN + proxying + ...

Leave the Express comfort zone to expand how you think about Node application architecture. tl;dr using a function composition model for building HTTP servers is awesome Functions as a Service are great but have some drawbacks micro has a similar, simple API to FaaS but doesn&rs ...

Node has been implementing more and more ES6+ (ESNext) features natively. One of the features that is taking the longest to implement is modules. The reason for this is that Node and npm run on what is called CommonJS, with which you use require('module-name') to import from othe ...

ObservableHQ is a platform being built by Mike Bostock (creator of the D3 visualisation library), Jeremy Ashkenas (“Made CoffeeScript, Backbone.js, Underscore and other ragbag” from his Twitter bio) and Tom MacWright (creator of the big presentation framework, simple-statistics a ...