UglifyJS2 VS Cypress

Minification involves removing unnecessary characters, whitespace, and comments from code files. It helps reduce HTML, CSS, JavaScript, etc., file sizes without compromising functionality. Removing redundant elements makes these HTML, JavaScript, and CSS files smaller. Since smaller code files need less internet traffic to transfer, they load faster. Utilizing tools like UglifyJS, Clean-CSS, and HTMLMinifier enhances this process of code reduction. They analyze the code, remove redundant code, and generate optimized files for deployment.

Example: You've got a main.js file that's as long as a Tolstoy novel. Fix: Use tools like UglifyJS or Terser to minify your code. They'll squeeze out all the unnecessary bits and give you a sleeker, faster-loading file.

Minification: UglifyJS, Terser

There are a bunch of libraries that do this, but my current go to is Uglify: https://www.npmjs.com/package/uglify-js

There are many minifiers such as terser and uglify. But, because minifying also require to parse the JS, it is actually possible to use esbuild and SWC to minify the code. Here's a benchmark of the main minifiers.

In my understanding, UglifyJS 3 is the most popular JavaScript minifier tool presently -- it has a very high weekly download too. And as per the official documentation, it supports ES6.

I'm thinking reverse-engineered uglified js code (https://github.com/mishoo/UglifyJS) is not as impenetrable as code from reversed engineered wasm binaries? The element of plausible deniability is much more potent though, for the nefarious actor on the other side.

Program: uglifyjs Arguments: $FileName$ -c -m -o $FileNameWithoutExtension$.min.js

Apart from terser, you can also use uglify-js to compress or minify javascript.

Uglify

In this blog post, we'll explore a Cypress test that replicates this scenario, utilizing the powerful intercept command to manipulate network requests and responses.

Recently I came across this issue while triaging some issues at Cypress. (Shout out to MattiaMalandrone for creating an issue with clear instructions for how to reproduce). After quickly replicating the issue I sought after a solution which ultimately inspired me to write this article.

While similar to Puppeteer, Cypress, and Selenium, there are some differences. Let’s find out what they are.

This questions was asked a while ago and pretty much went unanswered: https://github.com/cypress-io/cypress/issues/23677. If it doesn't work with libraries yet I will stop battling with it for now. If it doesn't work, what are you using to test libraries?

Cypress Release Notes