infrastructure

2 posts

testing

5 min read Jul 7, 2026

All 2,592 tests passed and the job failed: a vitest sharding playbook

Three rounds of CI failures where every test was green and the job was red — vitest's worker→main reporter RPC timing out under file-count pressure. The ~110-file floor we split on (set below the lowest count we watched fail), the matrix design that contains it, and the playbook for the next regrowth.

ci vitest infrastructure

testing

4 min read Jul 7, 2026

Offline tile mirrors for deterministic map e2e

Our CI container's browser can't reach the internet, but the final render gate needs a real 117-layer basemap. On mirroring styles, tiles, glyphs and sprites locally — and the traps: SPA fallback serving HTML as tiles, unencoded fontstacks, and settling on signals instead of sleeps.

e2e infrastructure tiles

X-GIS