Error TS2740 in Typescript source for Angular application

PaoloF — Wed, 08 Sep 2021 11:16:51 GMT

Hi everyone in the Community.

I'm developing an Angular application using Typescript and ES modules syntax, but I'm facing a problem when I try to define some ArcGIS objects taking source from sample API application on Esri website.

For example the following code fails:

import Point from '@arcgis/core/geometry/Point'; ... const point: Point = { //Create a point type: 'point', longitude: 12.600913, latitude: 42.55151, };

according to following pages on API documentation:

https://developers.arcgis.com/javascript/latest/add-a-point-line-and-polygon/
https://developers.arcgis.com/javascript/latest/api-reference/esri-geometry-Point.html

but just at editing time I got this error:

error TS2740: Type '{ type: "point"; longitude: number; latitude: number; }' is
missing the following properties from type 'Point': m, x, y, z, and 21 more.

Same behaviour occurs if I define in different ways the object.

May any of you explain what I'm making wrong and how to solve it?

Thanks in advance and best regards.

Re: Error TS2740 in Typescript source for Angular application

KenBuja — Wed, 08 Sep 2021 13:29:09 GMT

Typescript doesn't allow for autocasting, which is what's being used in line 7. To create a point, you'll have to use something like

const point: Point = new Point({ longitude: 12.600913, latitude: 42.55151, etc. });

topic Re: Error TS2740 in Typescript source for Angular application in ArcGIS JavaScript Maps SDK Questions

Error TS2740 in Typescript source for Angular application

Re: Error TS2740 in Typescript source for Angular application