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Move to Extract for @turf/helpers' geometry() #2976

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Merged
mfedderly merged 1 commit into from
Dec 17, 2025
+13 −14
Merged

Move to Extract for @turf/helpers' geometry() #2976

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27 changes: 13 additions & 14 deletions packages/turf-helpers/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -219,27 +219,26 @@ export function geometry<
type: T,
coordinates: any[],
_options: Record<string, never> = {}
): {
Point: Point;
LineString: LineString;
Polygon: Polygon;
MultiPoint: MultiPoint;
MultiLineString: MultiLineString;
MultiPolygon: MultiPolygon;
}[T] {
): Extract<Geometry, { type: T }> {
switch (type) {
case "Point":
return point(coordinates).geometry as any;
return point(coordinates).geometry as Extract<Geometry, { type: T }>;
case "LineString":
return lineString(coordinates).geometry as any;
return lineString(coordinates).geometry as Extract<Geometry, { type: T }>;
case "Polygon":
return polygon(coordinates).geometry as any;
return polygon(coordinates).geometry as Extract<Geometry, { type: T }>;
case "MultiPoint":
return multiPoint(coordinates).geometry as any;
return multiPoint(coordinates).geometry as Extract<Geometry, { type: T }>;
case "MultiLineString":
return multiLineString(coordinates).geometry as any;
return multiLineString(coordinates).geometry as Extract<
Geometry,
{ type: T }
>;
case "MultiPolygon":
return multiPolygon(coordinates).geometry as any;
return multiPolygon(coordinates).geometry as Extract<
Geometry,
{ type: T }
>;
default:
throw new Error(type + " is invalid");
}
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