The numerals policy is HELD — whether counts follow the reader's locale is the Driver's decision — so
this changes nothing anyone can see. Every caller renders exactly the digits and separators it
rendered before. What changes is how many places that decision is written down: thirteen call sites
across four bundles becomes one, library/utils/formatCount.js, and eight of the thirteen (mine) now
read it.
That is the whole value while the policy is held. If the answer becomes "follow the locale" it is a
one-line edit in formatCount.js instead of thirteen edits by four owners, each free to pick a
different locale source — and the first divergence in that world would be invisible: two panels in
one dashboard, same number, different separators.
★ IT FORMATS. IT DOES NOT DECIDE WHAT EMPTY MEANS, and that is the bug this fold would otherwise have
shipped. I told dx-shepherd these three helpers were "byte-identical". They are not:
DashboardDataTable null/undefined -> '' and '' falls through to Number('') === 0, so "0"
DashboardDetailDrawer null/undefined/'' -> '—'
useDashboardShell null/undefined -> '—' and '' likewise becomes "0"
Three different answers to "what does a missing count look like", inside one dashboard. Folding them
onto one empty policy would have silently changed two of the three — a table cell going from blank to
an em dash, or an em dash where a zero used to be. So each caller KEEPS its own guard and hands
formatCount a value it has already established is real. The locale decision folds; the empty policy
does not, and the difference is written into the helper's header so the next person does not re-merge
them.
Folded: DashboardDataTable, DashboardDetailDrawer, useDashboardShell (its exported fmt keeps working
for the KPI strip), DashboardFacetRail's three inline template calls, people-groups-grid's two.
NOT folded, because they are other owners': regions-dashboard (3) and pplr-data-maps (2). The helper
is theirs to import when they want it; nothing forces them, and no gate demands it — a gate requiring
the helper everywhere would fail on their files today, which is not a thing to land on someone else.
Source only. research-dashboard, dashboard-plus-grid and people-groups-grid need a rebuild.
6cc5542b70