Can anyone provide guidance on incorporating jQuery typing into an angular2 seed project?

I'm struggling to incorporate jQuery typings into my Angular2-seed project.

Within my component, I am utilizing jQuery in the following manner:

declare let $: any;

export class LeafletComponent implements OnInit {

    ngOnInit(): void {
        this.popup = $(this.element.nativeElement).find('#leaflet-popup');
    }
}

While this method works well, it results in an untyped $ object. Ideally, I would prefer something like:

declare let $: JQueryStatic;

I have installed @types/jquery via npm and attempted to utilize JQueryStatic. I have also experimented with various import statements in order to obtain a typed $ object, but none of them have been successful.

Additionally, the provided types from @types/jquery are only for jQuery 2.x, whereas I require types for jQuery 3.x.

Are there any suggestions on how to acquire proper types for jQuery version 3.x?

Answer №1

Hey there, I ran into a similar issue but managed to find a solution. Let me know if it works for you.

To resolve the issue, navigate to tools/config/project.config.ts

Insert the following code snippet in the constructor:

this.SYSTEM_CONFIG_DEV.paths[ 'jquery' ] =
`${this.APP_BASE}node_modules/jquery/dist/jquery`;
this.SYSTEM_BUILDER_CONFIG.packages[ 'jquery' ] = {
main: 'jquery.js',
defaultExtension: 'js'
};

After making the above changes, simply add import 'jquery'; to your app/app.module.ts

Additionally, ensure that you have "@types/jquery": "^2.0.32" and "jquery": "^3.1.1" listed in your package.json file.

No additional declarations are needed; everything should work smoothly after these modifications. Hope this helps!

Answer №2

Using the angular2 seed project, simply import it in this manner.

import * as $ from 'jquery';

I hope this information proves useful.

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