Muy graciosas las respuestas que se han publicado en Quora a la pregunta Why is VSCode nearly 300 megabytes while Sublime Text is just 16 megabytes?:

Because Visual Studio Code is based on Electron, which is a horribly, horribly bloated framework that combines the Chromium rendering engine with the Node.js runtime. Writing an application to execute in a web browser is the worst imaginable way to develop software. It’s way over-engineered and overly complicated. And Node.js (JavaScript) is typically 2–6X slower than C++.

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Visual Studio Code is a web browser with a code editor glued onto the side using expired epoxy.

VSCode is built on the Chromium rendering engine, which is made to render webpages, and is likely rendering this answer right now. The entire application is written using the duct tape monster that is Javascript. It’s a surprise that it is just 300 megabytes.

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Using bloated web based frameworks to implement a desktop application does not make much sense, but .. anyway…

 

Los valores null y undefined suelen dar muchos dolores de cabeza a los programadores. En el artículo Handling null and undefined in JavaScript se explica cómo se deben usar en JavaScript:

One aspect of JavaScript development that many developers struggle with is dealing with optional values. What are the best strategies to minimize errors caused by values that could be null, undefined, or otherwise uninitialized at runtime?

Some languages have built-in affordances for those circumstances. In some statically typed languages, you can say that null and undefined are illegal values, and let your programming language throw a TypeError at compile time, but even in those languages, that can’t prevent null inputs from flowing into the program at runtime.

To get a better handle on this problem, we need to understand where these values can come from. Here are some of the most common sources:

• User input

• Database/network records

• Uninitialized state

• Functions which could return nothing

Muy interesante el artículo Console cheat sheet for JavaScript developers que explica cómo usar la consola de JavaScript que incluyen la mayoría de los navegadores web.