Enhance arrays in Angular by incorporating dependencies

I am looking to develop an Angular module that extends the Array object with a 'http' property of type 'HttpClient' from Angular.

To achieve this, I created a typings.d.ts file containing:

import {HttpClient} from '@angular/common/http';

interface Array<T> {
  http: HttpClient;
}

I then added the following code snippet in the array.ts file (with undefined value for demonstration purposes):

Array.prototype.http = undefined;

However, when trying to access this property, I encountered the error:

'Property 'http' does not exist on type 'any[]''

Removing the import statement from my typings.d.ts file eliminated the initial error but introduced a new one specifically targeting the typings.d.ts file:

'Cannot find name 'HttpClient''

This issue may be attributed to my misunderstanding of how modules function in Typescript. For reference, I am utilizing TS version 2.3.4.

Answer №1

To achieve functionality, I implemented the Array interface declaration within the global scope.

This was done in my typings.d.ts file.

import {HttpClient} from '@angular/common/http';

declare global {
   interface Array<T> {
      http: HttpClient;
   }
}

More information on this approach can be found here.

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