Map.getOrInsert: Stop Writing the has/get/set Dance
Map and WeakMap now have getOrInsert and getOrInsertComputed, two methods that replace the check-then-set boilerplate every JavaScript codeb...
Oct 9, 2026
4 min
Your tsconfig Is Still Written for TypeScript 5. Here's the Cleanup TS 7 Forces
TypeScript 6 flipped half a dozen compiler defaults and TypeScript 7 deleted the options it deprecated. Here's the tsconfig audit that gets ...
Oct 4, 2026
3 min
Node.js Type Stripping: Run TypeScript Without a Build Step
Node.js now runs .ts files out of the box by erasing types, not compiling them. Here's what that buys you, what it refuses to do, and the ts...
Oct 1, 2026
4 min
Uint8Array toBase64 and toHex: Stop Round-Tripping Bytes Through btoa
JavaScript can finally turn bytes into base64 and hex (and back) without the String.fromCharCode and btoa dance. Here's how Uint8Array's new...
Sep 25, 2026
4 min
import defer: Lazy Modules Without Going Async
ES2026's import defer evaluates a module the first time you touch its namespace, not at startup, so you can move heavy work off the cold pat...
Sep 22, 2026
3 min
node --test: The Test Runner You Already Have Installed
Node's built-in test runner has been stable since v20 and now handles mocking, coverage, watch mode, and TypeScript files. Here's what it do...
Sep 12, 2026
3 min