Daily Software Tips & Tricks

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Defensive Coding with Optional Chaining

April 20, 2026

Stop writing long chains of checks like if (user && user.profile && user.profile.name). Modern JavaScript and TypeScript offer the optional chaining operator ?., which lets you safely access deeply nested properties. If any part of the chain is null or undefined, it simply returns undefined instead of throwing a crash-inducing error. It makes your code significantly more readable and much more resilient to unexpected data structures.