Guide on importing npm packages without TypeScript definitions while still enabling IDE to provide intelligent code completion features

I am currently utilizing an npm package that lacks type definitions for TypeScript. Specifically, I'm working with the react-google-maps library.

Following their recommended approach, I have imported the following components from the package:

import {GoogleMapLoader, GoogleMap, Marker} from "react-google-maps";

Unfortunately, during compilation, TypeScript presents an error stating that:

error TS2305: Module '"react-google-maps"' has no exported member 'GoogleMapLoader'.

To address this issue quickly, I declared the module and its members as type "any":

declare module "react-google-maps" {
    export var GoogleMapLoader:any;
}

However, now I face a new challenge - my IDE (WebStorm) no longer provides intellisense support. The component GoogleMapLoader is not recognized as a react component, unlike when using Babel which would recognize at least the methods and properties even without typings.

Is there a way to import npm packages without type definitions for TypeScript while still allowing the IDE to offer intellisense?

javascripttypescriptnpmwebstormtypescript-typings

Answer №1

Make sure to specify exactly what you're using instead of relying on any.

Here's an example:

declare module "react-google-maps" {
    interface GoogleMapLoaderProps {
        ....
    }

    interface GoogleMapLoaderState {
        ....
    }

    class GoogleMapLoader extends React.Component<GoogleMapLoaderProps, GoogleMapLoaderState> { }
}

Start with the essentials and gradually add more as needed for IDE support.
Refer to the Writing Declaration Files for detailed instructions.

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