Leverage JavaScript libraries utilizing namespaces within your Angular application

I have a unique JavaScript library that includes functions organized within namespaces. For example:

var testNamespace = {
    insideFunction: function(str) {
        alert(atr);
    }
};

Now, I am trying to integrate these functions into my Angular app.component.ts file. Despite successful integration of the JS library with Angular, I encountered an issue when attempting to use the functions while keeping them within their original namespaces. The following code snippet demonstrates how I got it working by removing namespaces from the JS library:

declare function insideFunction(str: string): void;

...

export class AppComponent {

  public test(str: string): void {
    insideFunction(str);
  }

}

However, due to requirements for encapsulation, I cannot remove namespaces. Thus, my question is: How can I declare and utilize external JavaScript functions that are contained within namespaces? As someone new to frontend development, any guidance or assistance would be greatly appreciated.

Answer №1

To incorporate this specific namespace into your Angular application, you must first declare it. Begin by generating a file named typings.d.ts within the src directory of your Angular project, and then proceed to define your namespace in the following manner:

declare namespace customNamespace {
  export function internalAction(input: string);
}

Subsequently, you can utilize this namespace within any Angular component by utilizing the syntax below:

customNamespace.internalAction('example');

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