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A practical guide to trim, split, join, and friends String manipulation shows up everywhere, interviews included.Yet many developers freeze because strings feel “magical”. They’re not. Once you see the patterns, it becomes mechanical. The Core Mental Model Strings are immutable.You…
As engineers grow, the biggest shift is not learning new syntax, but learning to recognize bad code early. These mistakes have names for a reason, they show up everywhere, across teams, languages, and seniority levels. This post is a practical…
A clear, practical comparison for modern E2E testing End-to-end testing is table stakes now. Two big options you’ll hear about are Playwright and CodeceptJS. Both help you automate full user flows in browsers. But they take very different approaches. For…
If you’re using Playwright with Page Objects, you’ve probably seen something like this: It works. But it’s a bad pattern. This article explains what this pattern is, why it causes problems, and what to do instead. What Is This Pattern…
TypeScript gives you many ways to describe data. That’s powerful, but also confusing. If you’ve ever asked “why does this exist when that already works”, this post is for you. I’ll explain what each one really is, what it’s good…
data-testid gets a bad reputation. Some people say it’s lazy. Others say it’s an anti-pattern. Both are wrong. data-testid is a tool. Like any tool, it’s either used with intent or abused. Let’s be honest about when it’s the right…
“DOM” is one of those words everyone uses and half the people misunderstand. If you write UI tests and don’t truly get the DOM, you will write fragile tests. Period. Let’s fix that. DOM does NOT mean HTML DOM =…
Playwright is powerful. That’s also the problem. It lets teams move fast, and when teams move fast, test quality quietly degrades. You end up with unreadable assertions, inconsistent page objects, slow test runs, and Allure reports nobody trusts. I stopped…
If your Playwright tests are full of waitForTimeout() or “wait a bit then click”, you are buying flakiness and slow runs. Playwright already has smarter waiting built in. Your job is to wait for a condition, not wait for time.…
Most conflicts at work aren’t really about people. They’re about pressure, unclear ownership, and timing. But when something breaks, pipelines turn red, or deadlines get tight, the conversation often shifts from facts to tone. That’s when conflict starts. I’ve learned…