With @types/select2 installed, it allows the typescript compiler to do static type checking to ensure the Select2 library is being called correctly. It does not change the way you use the select2 - you still need to install the Select2 library and use it as you would have without type checking.

For external dependencies (like jQuery or Select2) you should install their corresponding type definition files, so that the typescript compiler can resolve the external types at compile-time. This is preferred over declaring an any types (i.e. declare var $: any)

Make sure you install jQuery types as well :

npm install @types/jquery

This will install the type definitions under node_modules/@types/jQuery. By default, the typescript compiler will resolve types from the node_modules/@types folder.

For TypeScript NodeJS packages, you can generate type definition files as part of the compilation step and specify index.d.ts in the typings property of your package.json file. In this case, you don't necessarily need to export the type definitions to node_modules/@types.

I had a similar issue and fixed it by importing:

import 'select2';

which I had installed earlier:

npm install select2 --save

Once you've done that, you can use the library through jquery as usual.

I solve this by

import { Select2} from 'select2'

and also install:

npm install @types/select2@4.0.48

Now i have to run test but no more errors on Typescript slint