Vector basemaps rendered Arabic, Hebrew, Persian and Urdu place names as
isolated letters in logical order — "القاهرة" drawn as "ة ر ه ا ق ل ا" —
because neither GL engine loads its optional RTL text plugin by default and
TREK never registered one. Raster basemaps hid the problem, since their
labels are drawn server-side, so it only became visible for everyone when
the default basemap became a vector style.
Both engine entry points now register the plugin lazily, so the payload is
only fetched once a map actually paints RTL text and Latin-only users
download nothing. The call is left with each engine because the two
signatures genuinely differ: MapLibre takes (url, lazy) and returns a
promise, Mapbox takes (url, callback, deferred).
The plugin is bundled rather than loaded from a CDN: TREK is offline-first
and the production CSP is script-src 'self', so a remote plugin URL would be
refused by the worker that imports it. Bundling also puts it in the Workbox
precache, so shaping keeps working offline. It needs a resolve alias because
the package publishes only its ESM/WASM entry point through "exports" while
setRTLTextPlugin requires the classic script in dist/ — the alias is shared
by the build and test configs so the two cannot drift.
Treats the gate as a floor rather than a target — the suite runs well above it,
and a PR that legitimately trades a few points should not have to move the
numbers to land.
Pushes lines from 95.2% to 98.1% and branches from 85.2% to 89.9%, mostly
in the release-notes modal, the reservation overlay, the journey entry sheet
and the trip dialogs.
jsdom replaces globalThis.AbortController with its own implementation;
Node.js undici-based fetch validates signals via instanceof against the
native AbortSignal, causing fetch to throw before MSW could intercept.
Fix via custom Vitest environment (tests/environment/jsdom-native-abort.ts)
that captures native AbortController/AbortSignal before jsdom patches them
and restores them after jsdom setup.
Also updates JournalBody test 004 to match component behaviour (headings
rendered as <p>) and removes debug console.log statements.
Mohamed Elkmeshi