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Thoughts on frontend development, tools, and craft.

Rest Parameters and Spread: The Two Faces of `...` in JavaScript & TypeScript

The `...` operator does two opposite jobs depending on where you put it. In a parameter list it gathers any number of arguments into an array (rest); in a call or literal it scatters an array back into individual values (spread). Here's how to tell them apart — using a real URL-builder helper as the guide.

June 17, 2026 · 5 min read

javascripttypescriptfunctions

Jun 2, 2026 · 7 min read

One URL, Two Experiences: Modals That Survive a Refresh with Next.js Intercepting Routes

A modal that vanishes when you reload or share its link isn't a page — it's a trap. Here's how I used Next.js parallel and intercepting routes to make my portfolio cards open in a modal on click, yet resolve to a real, shareable, SEO-indexed page on a direct visit — without duplicating a single line of UI.

nextjs-app-routerreactfrontend