Welcome to the 93th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 92nd Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 91st Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 90th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 89th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 88th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 87th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 86th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 85th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 84th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 83rd Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 82nd Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 81st Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 80th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 79th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 78th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 77th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 76th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 75th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 74th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enterprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 73rd Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 72nd Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 71st Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

I’ve had great success prototyping with Excalidraw for mockups, + for visuals and to input, inject and organise data in a readable format.

Welcome to the 70th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 69th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 books I think are worth your time in the next couple of week,

Welcome to the 68th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 67th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

Welcome to the 66th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week, they’re around the theme of how to do more of what makes you happy as a software engineer (be that money, more free time, travelling or using tools you enjoy).

Welcome to the 65th Edition of the Code with Hugo newsletter about JavaScript, Node.js & Enteprise patterns.

Here are 3 links I think are worth your time this week,

Here are 3 links I think are worth your time this week,

1. Catalina “Apple cannot check for malicious software” Command Line Fix (2 min read):

Welcome to 2020 on Code with Hugo,

Here are 3 links I think are worth your time this week,

Last week I had a call with Quincy Larson of freeCodeCamp (to be onboarded as an author).

I’m a massive fan of the work he’s done with limited resources, we got to chatting and realised that we’re both trying to solve the “content is out there but not in the right format” problem.

He showed me his newsletter template, and I’ve shamelessly decided to copy it. It goes as follows:

Here are 3 links I think are worth your time this week,

The Jest Handbook is now ready for preorders.

If you’re curious about advanced Jest features, or want to level up your JavaScript testing fundamentals (or just want to support Code with Hugo), this is for you: .

Hot off the press

Jest set, clear and reset mock/spy/stub implementation: Between test runs we need mocked/spied on imports and functions to be reset so that assertions don’t fail due to stale calls (from a previous test).

If you missed it

Hot off the press

Jest .fn() and .spyOn() spy/stub/mock assertion reference: Where other JavaScript testing libraries would lean on a specific stub/spy library like Sinon - Standalone test spies, stubs and mocks for JavaScript.

If you missed it

Hot off the press

Jest Array/Object partial match with objectContaining and arrayContaining: It’s possible to do partial matches on Arrays and Objects in Jest using expect.objectContaining and expect.arrayContaining.

I’ve got some free ebook review referral copies of Professional JavaScript still available, if you’re interested and you’re eligible (have spent $50 on Amazon in the past calendar year so you can leave a review), let me know by replying (hi@codewithhugo.com).

👋 Welcome to this week’s newsletter where we discuss how to programmatically fail a test, why you would want to do so and more.

Hot off the press

Jest explicitly or arbitrarily force fail() a test: When testing code with Jest, it can sometimes be useful to fail a test arbitrarily.

Hot off the press

I’ve added a new section “Partial module mocking with jest.requireActual“ to .

I’m working on an Advanced Jest Guide to save everyone time when faced with non-trivial Jest issues.

Jest is super powerful and has really nifty features that are underused which give you superpowers.

This is in addition to the book I’ve been co-authoring, “Professional JavaScript” being published with Packt. I’ve learnt a lot from that experience and hopefully I can put those new skills to good use in this project.

Hot off the press

Auto-publish future posts with JAMstack on Netlify and IFTTT/CircleCI 2.0 scheduled jobs: Static site generators like Hugo, Jekyll, Hexo, Gatsby or other JAMstack alternative are a great option to run your blog on.

I love micro, but Express is just too ubiquitous at the moment.

Hot off the press

Performance improvements 👀

Hot off the press

Detect ctrl/CMD/alt/shift + Click in Vanilla JavaScript and React: Detecting control-click, command-click, alt-click and shift-click in JavaScript without listening to keydown events is straightforward.

In fun fails, I configured a healthcheck for an app to fetch the RSS feed of Code with Hugo every minute… leading to a bunch of uncached traffic.

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Record analytics events with a Zeit “micro” + SQLite3 Node.js application: In order to finally switch off Google Analytics, I need to replace my goal conversion tracking somehow.

In Code with Hugo performance improvements this week. I got rid of Google Analytics. It’s just and my custom event recording service backed by SQLite.

Hot off the press

How to run Jest tests sequentially: By default Jest runs tests in parallel with a “a worker pool of child processes that run tests” (Jest CLI docs).

Recent work to leverage ‘s asset pipeline for both resource bundling and image resizing has been successful. The outcomes are documented in the following thread, should now be snappier and less data-hungry (no 1500x1500 images used as thumbnails any more):

Hot off the press

Detect if the current file/module is the entrypoint or import/require-d in Node.js: How does one identify whether a JavaScript file is being run directly (node file.js) or it’s being import/require-d (require(‘./file’) in another JS file).

Updated the on my page.

Hot off the press

JavaScript ES6 Array remove duplicates/get unique values in-depth with Set and spread/iterables: With ES6, more developers should be leveraging built-ins than are using lodash functions. Here is an ES6 implementation of lodash/underscore’s uniq: const dedupe = list => […new Set(list)]; This post goes through the how and why this works.

If you missed it

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Add Diagrams to your Jekyll/Hugo/Gatsby blog with Mermaid JS: The following post will go through how to integrate Mermaid JS, a “simple markdown-like language for generating charts”.

You should also have a look at the .

Hot off the press

Yarn Workspaces: monorepo management without Lerna for applications and coding examples: How to use Yarn Workspaces to manage applications/coding examples.

Started work on a widget: “SponsorCost” available on . I’m scratching my own itch, I keep having to Google for reasonable prices for sponsorship, so that’s that.

Hot off the press

Jest Full and Partial Mock/Spy of CommonJS and ES6 Module Imports: The example repository is available at github.com/HugoDF/mock-spy-module-import.

New repos:

Hot off the press

Jest assert over single or specific argument/parameters with .toHaveBeenCalledWith and expect.anything(): With Jest it’s possible to assert of single or specific arguments/parameters of a mock function call with .toHaveBeenCalled/.toBeCalled and expect.anything().

I’ve been toying with a new project, there’s prior art in the field (but was discontinued).