Flow GeoJSON

Flow type definitions for GeoJSON

• Install
  • npm
  • Yarn
• Usage
  • About coordinates
  • Available types

Install

npm

npm install --save-dev flow-geojson

Yarn

yarn add --dev flow-geojson

Usage

About coordinates

Because of the flow restrictions, the package uses three types of coordinates:

/**
 * For universal, but less strict type checking
 * [longitude, latitude] or [longitude, latitude, altitude]
 */
type Coord   = [number, number, number | void];

/**
 * [longitude, latitude]
 */
type Coord2D = [number, number];

/**
 * [longitude, latitude, altitude]
 */
type Coord3D = [number, number, number];

All exported types are named similarly to the type of coordinates used.

Opaque types support

Since version 2.0.0, you can use types with the suffix Strict. For example Point3D contains [number, number, number] when Point3DStrict contains [Longitude, Latitude, Altitude].

Available types

• Longitude (opaque type)
• Latitude (opaque type)
• Altitude (opaque type)
• FeatureCollection
• FeatureCollectionStrict (use coordinates as opaque types)
• FeatureCollection2D
• FeatureCollection2DStrict (use coordinates as opaque types)
• FeatureCollection3D
• FeatureCollection3DStrict (use coordinates as opaque types)
• Feature
• FeatureStrict (use coordinates as opaque types)
• Feature2D
• Feature2DStrict (use coordinates as opaque types)
• Feature3D
• Feature3DStrict (use coordinates as opaque types)
• Point
• PointStrict (use coordinates as opaque types)
• Point2D
• Point2DStrict (use coordinates as opaque types)
• Point3D
• Point3DStrict (use coordinates as opaque types)
• MultiPoint
• MultiPointStrict (use coordinates as opaque types)
• MultiPoint2D
• MultiPoint2DStrict (use coordinates as opaque types)
• MultiPoint3D
• MultiPoint3DStrict (use coordinates as opaque types)
• LineString
• LineStringStrict (use coordinates as opaque types)
• LineString2D
• LineString2DStrict (use coordinates as opaque types)
• LineString3D
• LineString3DStrict (use coordinates as opaque types)
• MultiLineString
• MultiLineStringStrict (use coordinates as opaque types)
• MultiLineString2D
• MultiLineString2DStrict (use coordinates as opaque types)
• MultiLineString3D
• MultiLineString3DStrict (use coordinates as opaque types)
• Polygon
• PolygonStrict (use coordinates as opaque types)
• Polygon2D
• Polygon2DStrict (use coordinates as opaque types)
• Polygon3D
• Polygon3DStrict (use coordinates as opaque types)
• MultiPolygon
• MultiPolygonStrict (use coordinates as opaque types)
• MultiPolygon2D
• MultiPolygon2DStrict (use coordinates as opaque types)
• MultiPolygon3D
• MultiPolygon3DStrict (use coordinates as opaque types)
• GeometryCollection
• GeometryCollectionStrict (use coordinates as opaque types)
• GeometryCollection2D
• GeometryCollection2DStrict (use coordinates as opaque types)
• GeometryCollection3D
• GeometryCollection3DStrict (use coordinates as opaque types)