Could not find a declaration file

[LukaTchubabria]

Does this library have no types? How to solve this problem?

import { geoCylindricalStereographic } from "d3-geo-projectio ] Could not find a declaration file for module 'd3-geo-projection'.

[mbostock]

D3 does not maintain TypeScript declarations but some are maintained by the community as part of the DefinitelyTyped project.

[kbtz]

As a workaround one can declare the needed exports in an ambient declaration (.d.ts file) as follows:

declare module "d3-geo-projection" {
    import { GeoProjection } from "d3-geo"
    export function geoPatterson(): GeoProjection
}