betterer VS webpack

We first took a shot at addressing this gradually using a tool called Betterer, which works by taking a snapshot of the state of a set of errors, warnings, or undesired regular expressions in the codebase and surfacing changes in pull request diffs. Betterer had served us well in the past, such as when it helped us deprecate the Enzyme testing framework in favor of React testing library. However, because there were so many instances of noImplicitAny errors in the codebase, we found that much like snapshot tests, reviewers had begun to ignore Betterer results and we weren’t in fact getting better at all. Begrudgingly, we removed the rule from our Betterer tests and agreed to find a different way to enforce it. Luckily, this decision took place just in time for Snoosweek (Reddit’s internal hack week) so I was able to invest a few days into adding a new automation step to ensure incremental progress toward adherence to this rule.

Check out the beast of a PR here (and yes, it took me three branches to get it right 😅)

I just released v4.0.0 of Betterer 🎉 (now with sweet new docs!) and it has a bunch of simplified APIs for writing tests. And just before I shipped it, I got an issue asking how to write a Stylelint test, so let's do it here and explain it line by line:

You may think that is a bad idea, and stops innovation and adopting new trends and technologies. I dare to disagree. New conventions can be agreed on, and when a new convention is agreed on, it should be used in the codebase from that day on. Either by refactoring the whole code base to follow the new convention, which should be doable if the previous convention was followed carefully, or by using tools such as phenomnomnominal/betterer to incrementally adopt a new convention, and stop anyone from adding new code that does not follow the newly agreed convention. It is equally important to document the agreed conventions and keep the documentation up-to-date over time in addition to making sure everyone on the team hears about and understands the agreed conventions.

I have a tool that I've been working on for a while, and debugging it can be kind of a pain - especially when it's running inside VS Code. It'd be nice to have an easy way to get information about what is going on when the tool runs, without having to manually write a bunch of debug logging code and release a new version. That means that the usual approaches are not going to work:

There are various tools available that manage the size of bundled assets. We are going to use the example of a popular and widely used bundler named Webpack, and practically look at many of the optimization techniques it offers.

Homepage: https://webpack.js.org/

Click "Start Test." WebPageTest generates a comprehensive report with details about the loading process, including time to first byte (TTFB), page load time, and visual progress. ### Setting Benchmarks with Lighthouse Start with Lighthouse audits to maximize the performance of your React application. Evaluate Lighthouse's scores and suggestions with careful consideration. Next, set benchmarks that are in line with industry norms or customized to meet your unique performance goals. Lastly, pay close attention to the places in your application where it needs work. You can improve your React application's effectiveness by carefully following these procedures, which will guarantee that it satisfies the required performance requirements. ### Analyzing Performance Results with WebPageTest In order to fully evaluate your webpage's performance, launch WebPageTest with a variety of systems, simulating a variety of user scenarios. Examine the waterfall chart carefully to identify loading patterns and bottlenecks, which are essential for improving the user experience. To see the page's rendering process over time and do a thorough examination, use filmstrip views. To effectively assess performance, pay special attention to measures such as time to first byte (TTFB), start render time, and fully loaded time. Also, a better understanding of performance variances is made possible by comparing findings across various test designs, which helps make well-informed recommendations for improving webpage responsiveness and efficiency. ## Impact of third-party libraries on React app performance Third-party library integration can speed up development while improving functionality in our React application. It's crucial to consider the possible effects on performance, though. Because heavy or poorly optimized libraries might negatively impact the speed and usability of our application. ### Bundle Size Look at the distribution file sizes related to the library, and use tools such as Bundlephobia or Webpack Bundle Analyzer to fully evaluate their impact on your bundle size. This thorough analysis enables you to make well-informed decisions about whether to include the library, making sure that its contribution minimizes superfluous bulk in your application's codebase and is in line with your optimization goals. ### Network Requests Analyze how the third-party library affects network requests to maximize performance. Reduce the number of requests made overall by minimizing external dependencies. This will enhance the user experience and loading speeds. Select appropriate libraries, maximize asset delivery, and leverage code splitting to load components asynchronously. You may improve the effectiveness and responsiveness of your application and provide users with a better experience by cutting down on pointless network queries. ### Execution Time Examine the library's code for any possible performance problems or bottlenecks in order to analyze the runtime performance of the library. Look for places where the code may execute slowly or inefficiently. You may ensure smoother operation inside your application by identifying and addressing any areas of the library's implementation that may be impeding ideal performance by doing a comprehensive assessment. ### Code Splitting for Third-Party Libraries Implementing code splitting is an effective strategy to load third-party libraries only when they are required, reducing the initial page load time. Use dynamic imports to load the library lazily:

Thanks for the thorough answer!

I confess I wasn't thinking about a particular build tool. My recent experience has been with Vite, where I took a similar approach to what you describe, but haven't had to dig deep into bundle performance because that's not a bottleneck for our application. The last time I did deeper work on the subject was years ago with Webpack.

I thought Webpack at least did dead-code elimination before splitting things into chunks. If I'm reading this random GitHub issue[1] right (and the asker is also right), Webpack does partially behave as I expected, but the pre-chunking optimization pass occurs before things like constant expression evaluation.

[1] https://github.com/webpack/webpack/issues/16672

Webpack is a powerful and widely-used module bundler for JavaScript applications. It’s known for its flexibility and extensive plugin system, making it a popular tool in complex web development projects.

Thats all about Webpack Basic, there are lots of feature of webpack, You can check here: https://webpack.js.org/

Many web pages use CSS and JavaScript files to handle various features and styles. Each file, however, requires a separate HTTP request, which can slow down page loading. Concatenation comes into play here. It involves combining multiple CSS or JavaScript files into a single file. As a result, pages load faster, reducing the time spent requesting individual files. Gulp, Grunt, and Webpack are some of the tools that can assist you in speeding up the concatenation process. They enable seamless merging of many files during development, ensuring deployment readiness.

Once you build a simple Vite backend integration, try not to complicate Vite's configuration unless you absolutely must. Vite has become one of the most popular bundlers in the frontend space, but it wasn't the first and it certainly won't be the last. In my 7 years of building for the web, I've used Grunt, Gulp, Webpack, esbuild, and Parcel. Snowpack and Rome came-and-went before I ever had a chance to try them. Bun is vying for the spot of The New Hotness in bundling, Rome has been forked into Biome, and Vercel is building a Rust-based Webpack alternative.

Webpack is a module bundler, the main purpose of which is to bundle JavaScript files to make them usable in a browser.