openfreemap

Swapped a static map for MapLibre in Next.js 16. The frame rendered, zero tiles loaded, zero errors. The worker never started.

TL;DR: A MapLibre map rendered markers but gray tiles under Next.js 16's Turbopack, which fails to emit the worker's companion file, so zero tile requests fired and the console stayed clean. The fix: load MapLibre 4.7.1 from a CDN, where the worker inlines as a blob URL. Version 6+ instead recommends copying worker files to public and setting workerUrl.

Fiord made the map dark but flat. I mutate the style JSON at runtime: a road brightness ladder, bright haloed labels, and a guard against fast-toggle flashes.

TL;DR: The author built a dark mode for Fiord by fetching its JSON and overriding paint across 28 layers with brightness steps, since CSS filters broke markers and the built-in dark style lacked contrast. The map renders the base style instantly then upgrades when the mutated style resolves, with guards against stale toggles. This treats style JSON as mutable data, not a fixed product.