Enhancing AngularJS functionality through the integration of jQuery within a TypeScript module

As I try to integrate TypeScript into my codebase, a challenge arises. It seems that when loading jQuery and AngularJS in sequence, AngularJS can inherit functionalities from jQuery. However, when locally importing them in a module, AngularJS fails to extend itself with jQuery. Thus, when I attempt something like this:

import * as $ from 'jquery';
import * as angular from 'angular';

export default ['$window', function($window) {
  let position = angular.element($window).scrollTop();
}];

An error in TypeScript occurs:

Error: Property 'scrollTop' does not exist on type 'JQLite'.

How can I ensure that AngularJS recognizes and utilizes the abilities of jQuery when loaded?

javascriptjqueryangularjstypescript

Answer №1

When working with webpack, one handy library you can utilize is the expose-loader. This library allows you to load jQuery onto the window object.

For webpack version 1:

module: {
  loaders: [
    { test: require.resolve("jquery"), loader: "expose-loader?$!expose-loader?jQuery" },
  ]
}

For webpack version 2:

module: {
  rules: [{
          test: require.resolve('jquery'),
          use: [{
              loader: 'expose-loader',
              options: 'jQuery'
          },{
              loader: 'expose-loader',
              options: '$'
          }]
      }]
}

For more information, visit expose-loader

Answer №2

After examining the link provided by @ParthRaval, I successfully resolved the issue by converting the JQLite base to an 'any' type. It became apparent that it was a typecasting problem rather than AngularJS failing to recognize jQuery's full loading and usage. Putting it inside a function improved its visual appeal.

import * as $ from 'jquery';
import * as angular from 'angular';

export default ['$window', function($window) {

  let position = JQLiteFix(angular.element($window)).scrollTop();

  function JQLiteFix(query) {
    return <any>query;
  }

}];

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