# Map coverage and small states

> WestCoast Charts 1.1.5, release, public Core release, on npm. HTML: https://westcoast-charts.com/docs/maps-coverage/ · Index for agents: https://westcoast-charts.com/llms.txt · Source: library guide, commit 95f093ba

`maps/world-small-states.js` / `.json` retain the existing world map's 177 regions
and add real polygon boundaries for **AND, BHR, LIE, MCO, MLT, SGP, SMR and VAT**.
The default `world` map and its download size are unchanged. This supplement is
**not a complete ISO 3166 country/territory dataset**; missing joins are reported
by the map renderer and available through `api(chart).unmatched()`.

```js
import smallStates from 'west-coast-charts/maps/world-small-states.js'
WestCoastCharts.registerMap('world-small-states', smallStates)
// plotOptions: { map: { map: 'world-small-states' } }
```

The UMD script registers this name automatically if the library is already loaded.
Tiny regions keep their true geographic outlines; they are never enlarged into
invented territory polygons. Zoom or a caller-provided marker can improve their
visibility at world scale.

## Provenance and reproduction

The eight outlines and attributes are extracted from Natural Earth's
`ne_10m_admin_0_countries.geojson`, pinned to official repository commit
`ca96624a56bd078437bca8184e78163e5039ad19`:

<https://github.com/nvkelso/natural-earth-vector/blob/ca96624a56bd078437bca8184e78163e5039ad19/geojson/ne_10m_admin_0_countries.geojson>

Natural Earth is public domain:
<https://www.naturalearthdata.com/about/terms-of-use/>.
The full source download's SHA-256 and pinned URL are preserved in
`source/natural-earth-small-states.geojson`; only the eight selected source
features are vendored. Their coordinates are quantized to 0.000001 degree.
All other regions retain the existing 1:110m world-atlas / Natural Earth
geometry and notices in `NOTICE` (world-atlas 2.0.2, ISC, Michael Bostock).

Run `node maps/source/build-small-states.cjs` to regenerate the two optional
modules from the checked-in `world.json` and selected source features. This does
not regenerate or alter the default world module.