Common Mistakes Developers make when Using Proxy API with JavaScript

Common Mistakes Developers make when Using Proxy API with JavaScript

Even the best developers make mistakes from time to time. So, whether you are new to using proxy API with JavaScript or whether you are an old hand, there can be multiple errors you need to watch out for to avoid. Here are some of the most common ones.

Blocking the Event Loop

When you first use proxy API with javascript, it can be easy to make common mistakes. For instance, when using a proxy API that runs on a single thread, anything that blocks the event loop will end up blocking everything. That means if you mistakenly block the event loop, the web server’s connected clients, of which there could be thousands, will simply have to wait.

Thankfully, you can monitor the event loop to detect any anomalies by using proprietary solutions or open-source modules. Such tools can accurately and repeatedly track the time-spend between an interval and report the problem.

Wasting Time with Restarts

Developers can be slowed down when a language requires a restart after they have made alterations to a source-code. They can also be affected by the need to refresh a browser when the static code changes. Rather than doing those things manually, you can speed up the process by using existing tools to automate the tasks.

With the right modules, they can watch for file changes and automatically restart the browser on your behalf. These refreshes can be done either by injecting a script into the page or using a browser plugin.

Executing a Callback Several Times

A common mistake that developers make when using a proxy API with JavaScript is saving files and reloading a web app only to see it immediately crash. If that happens, the most likely cause is you have executed the callback twice in error. If you don’t forget to return after the first time, you can avoid that problem.

Callback Nesting

Some developers think callback nesting is unavoidable, but that doesn’t have to be the case. There are various solutions available to make sure your code is neat and tidy. For instance, you can use control flow modules, promises, and generators.

The app will act as a naïve frontend resource analyzer that checks how many scripts, stylesheets, and images are in the code, outputs the total number to the terminal, and checks each resource’s content-length. It then pushes the total length of the resources to the terminal.

Creating Large Monolithic Applications

Other common mistakes developers make include not breaking things into their own modules and containing everything in a single file. By doing that, you will make it difficult to test and read the code. A little refactoring will easily solve that issue and make everything neater and more modular.

Not Carrying Out Tests

You should never consider your application to be finished if you haven’t written any tests for it. There is an abundance of tools you can use to test the proxy API. You can use testing frameworks, assertion modules, and code coverage tools.


About Alice

Layout designer, SEO & marketing analyst. Since 2010 is also a junior developer, working on the web site back-end infrastructure of some italian press companies. She also actively manages a number of social pages (Facebook, Twitter, LinkedIn) for some IT companies and press agencies.

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