Updating the TypeScript interface definition for $injector.get in an AngularJS project with added functionalities

In the process of migrating an Angular 1 project from JavaScript to TypeScript, I am looking to enhance the overloaded $injector.get method by adding the project's own injectable types. After reading through this TypeScript documentation on merging interfaces, I made changes in an imported d.ts file:

import TrendDisplayService from 'services/TrendDisplayService';
declare namespace angular {
  export module ng.auto {
      export interface IInjectorService {
        get(name: 'trendDisplayService'): TrendDisplayService
      }
  }

}

Despite this modification, I am encountering a "not assignable" type error when attempting the following:

let trend:TrendDisplayService = $injector.get('trendDisplayService');

Any insights or suggestions?

Answer №1

Within the declaration module, it is important to use auto instead of ng.auto.

declare namespace angular {
    export module auto {
        export interface IInjectorService {
            get(name: 'trendDisplayService'): TrendDisplayService
        }
    }
}

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