Learn how to suppress the output of undesired console.log() calls in your Jest tests.
How to hide JavaScript’s console.log output in Jest tests
Category: JavaScript
Resources, tutorials, articles about JavaScript, Node.js, Deno, TypeScript, React, Jest, Enzyme and other JavaScript-based front and back end technologies.
TypeScript: make selected properties optional with Partial & Omit
When you use the utility Partial on a type, it will make all the type properties optional. Let's see how we can compose this utility with another one, Omit, to make optional only certain properties of this type. We'll finally create a utility type using TypeScript generics to apply this on any type we want.… Continue reading TypeScript: make selected properties optional with Partial & Omit
How to create a Bidirectional Map in JavaScript
Bidirectional maps allow you to query by key and get its value or by value and get its key. Learn how to implement them in JS and make them type safe with TypeScript.
How to create a Firebase login and sign up in React
Learn how to create a Firebase login and sign up system in React using hooks.
How to compile Rust into WebAssembly and run it in Deno
Learn how to create a Rust library of functions, compile it into WebAssembly, and run it on the Deno JavaScript runtime.
Testing JavaScript in WordPress plugins – JavaScript for WP
I spoke at the JavaScript for WP conference about writing tests for the JavaScript in our WordPress plugins. Talk was live online on July 10, 2020. The code and the slides can be found here.
How to properly create and publish a Deno CLI tool
In this Deno tutorial, we'll see how to create a Deno CLI tool with TypeScript. We'll explore how to read a directory and write a file. Finally, we'll learn to publish our Deno module to GitHub and run it directly from that location and also to install it locally so it can work without connection.
New Angular TypeScript support changes in version 10
Angular 10 introduces new support for TypeScript 3.9, new TS libraries and project structure, plus a stricter mode.
5 reasons why Deno will stop using TypeScript
Deno will stop using TypeScript citing several issues like slow compiling times and inefficient code structuring. Deno will start using pure JavaScript for its internal code.
5 cutting edge JavaScript features to improve your code
Learn about 5 new JavaScript features, operators, and expressions, that will improve your code, making it more readable and efficient.