我正在尝试从 Typescript 中的功能创建一个
使用常规 js,我只需要执行以下操作:
<Map
{...}
<GeoJSON
data={...} <- Here I put my feature in JSON format
style={...} <- Associated style
/>
/>
但是在 Typescript 中,如果我尝试做完全相同的事情,我会遇到以下错误:No overload matches this call.
Overload 1 of 2, '(props: Readonly<GeoJSONProps>): GeoJSON<GeoJSONProps, GeoJSON<any>>', gave the following error.
Type '{ type: string; geometry: { type: string; coordinates: number[]; }; }' is not assignable to type 'GeoJsonObject'.
Object literal may only specify known properties, and 'geometry' does not exist in type 'GeoJsonObject'.
Overload 2 of 2, '(props: GeoJSONProps, context?: any): GeoJSON<GeoJSONProps, GeoJSON<any>>', gave the following error.
Type '{ type: string; geometry: { type: string; coordinates: number[]; }; }' is not assignable to type 'GeoJsonObject'.
Object literal may only specify known properties, and 'geometry' does not exist in type 'GeoJsonObject'.ts(2769)
这是我尝试过的许多事情的示例:<Map
{...}
<GeoJSON
data={{
type: "Feature",
geometry: {
type: "Point",
coordinates: [125.6, 10.1]
}
}}
/>
/>
当我检查 GeoJsonObject 类型定义时,几何不存在,只有“类型”字段,那么我应该如何将几何传递给我试图创建的 GeoJSON 元素? (GeoJsonObject 类型定义:http://definitelytyped.org/docs/geojson--geojson/interfaces/geojson.geojsonobject.html)如果我在“常规”javascript 中尝试这段代码,它确实有效,你知道为什么吗?
最佳答案
解决方案 1(推荐)
为您感兴趣的 GeoJson 对象使用正确的类型。
import { GeoJSON } from 'react-leaflet';
const data: GeoJSON.Feature = {
type: 'Feature',
geometry: {
type: 'Point',
coordinates: [125.6, 10.1],
},
properties: {},
};
<Map
{...}
<GeoJSON data={data} />
/>
解决方案 2(不推荐)告诉 Typescript 编译器它应该将对象视为类型
GeoJsonObject
.import { GeoJsonObject } from 'geojson';
<Map
{...}
<GeoJSON
data={{
type: "Feature",
geometry: {
type: "Point",
coordinates: [125.6, 10.1]
}
} as GeoJsonObject }
/>
/>
关于javascript - 如何使用 Typescript + react-leaflet 创建 GeoJSON Feature 元素,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60349547/