Memory leaks in JavaScript are often silent and slow - little by little they degrade performance until your app becomes unusable. This post explains why leaks happen, shows real-world examples, demonstrates how to find them with tools like Chrome DevTools and Node.js profilers, and gives a practical checklist to prevent and fix leaks.
Learn how the nullish coalescing operator (??) helps you avoid common pitfalls with falsy values in JavaScript. Examples, gotchas, interactions with optional chaining and logical operators, TypeScript notes, and best practices included.
A deep dive into JavaScript's strangest behaviors - from NaN and == surprises to hoisting, TDZ, floating-point oddities, object key ordering, and event-loop pitfalls - with examples and tips to avoid bugs.
Explore how the Function constructor (new Function) lets you create JavaScript functions at runtime. Learn syntax, practical use cases, scope implications, performance and security trade-offs, and safer patterns for dynamic code generation.
A thorough guide to JavaScript Symbols: what they are, how they work, real-world use cases to avoid name collisions, and using well-known symbols to extend objects safely while keeping implementation details hidden.
A practical, in-depth guide to JavaScript obfuscation: what it does, when to use it, common techniques (minification, mangling, control-flow flattening, string encryption), tool examples, build integration, limitations, and best practices.
A deep look at common TypeScript 'hacks'-from as-any casts to elaborate type-level gymnastics-explaining why they’re tempting, how they break maintainability, and practical rules to keep your codebase healthy.
Learn the most common mistakes that break Bash scripts and the commands, options and workflows to find and fix them quickly - from quoting and word-splitting to set -x tracing, shellcheck linting and trap-based stack traces.