featureOf

Enforce expectations about types of Feature inputs for Turf. Internally this uses geojsonType to judge geometry types.
执行对Feature类型的期望。在内部，它使用geojsonType来判断几何类型。

> npm install @turf/invariant

参数

参数	类型	描述
feature	Feature	a feature with an expected geometry type
type	string	expected GeoJSON type
name	string	name of calling function

示例

var linestring1 = turf.lineString([[-24, 63], [-23, 60], [-25, 65], [-20, 69]], {name: 'line 1'});

turf.featureOf(linestring1, 'LineString', 'line 1');