Notes

Engineering

1. 14 August 2026 · 8 min read

   MapLibre draws a blank map in Next.js, and the worker URL is why

   A bundler rewrites import.meta.url to a file:// path, MapLibre's worker URL resolves to an empty string, and new Worker('') loads your own HTML. Here is the fix.

2. 9 August 2026 · 4 min read

   We drew the map ourselves

   A stock map SDK would have made Letterway look like every other app. So the small maps are drawn from Natural Earth data, and the big ones are OpenStreetMap.