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an article
Goodbye, Clean Code
It was a late evening.My colleague has just checked in the code that they’ve been writing all week. We were working on a graphics editor canvas, and they implemented the ability to resize shapes like rectangles and ovals by dragging small handles at their edge...
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Components are code, and that code has to run somewhere. But wait—whose computer should they run on? Should they run on your computer? Or on mine?
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Art
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I1
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It starts with some code and data on my device. For example, I am editing this blog post as a file on my laptop. If you see it on your screen, it must have already traveled from my device to yours. At some point, somewhere, my code and data turned into the HTML and JavaScript instructing your device to display this.
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Suppose I want to display something on your screen. Whether I want to display a web page like this blog post, an interactive web app, or even a native app that you might download from some app store, at least two devices must be involved.
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Before You memo()
here are many articles written about React performance optimizations. In general, if some state update is slow, you need to:Verify you’re running a production build. (Development builds are intentionally slower, in extreme cases even by an order of magnitude.)...
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npm audit: Broken by Design
Security is important. Nobody wants to be the person advocating for less security. So nobody wants to say it. But somebody has to say it.So I guess I’ll say it.The way npm audit works is broken. Its rollout as a default after every npm install was rushed, inco...
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A Chain Reaction
I wrote a bit of JSX in my editor:Hello, Alice!The fact that this works is a marvel of engineering.Deep inside of your browser, there are pieces of code that know how to display a paragraph or draw text in italics. These pieces of code are different between di...
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What Is JavaScript Made Of?
During my first few years of using JavaScript, I felt like a fraud. Even though I could build websites with frameworks, something was missing. I dreaded JavaScript job interviews because I didn’t have a solid grasp on fundamentals.Over the years, I’ve formed a...
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The Two Reacts
Suppose I want to display something on your screen. Whether I want to display a web page like this blog post, an interactive web app, or even a native app that you might download from some app store, at least two devices must be involved.Your device and mine.I...
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