Tips for effectively utilizing a javascript constructor in typescript

I am attempting to incorporate a Javascript library into my Typescript project. Within the JS library, there is a class called pdfjs-dist with a constructor that is used in this manner:

findController = new _pdf_find_controller.PDFFindController({
    linkService: pdfLinkService,
    eventBus: eventBus
});

The issue I am facing is how do I define PDFFindController in the .d.ts file so that I can utilize this constructor? I've attempted an approach like this:

class PDFFindController {
        constructor(linkService: LinkService, eventBus: EventBus) {}

However, I continue to encounter the problem of PDFFindController being undefined, thus preventing me from using the constructor.

javascripttypescript

Answer №1

Have you tried using pdf.js? If you downloaded it or added it from a CDN, it's recommended to use npm instead. There are existing typings available for it. To install everything properly, execute the following commands:

npm install pdfjs-dist
npm install -D @types/pdfjs-dist

In your code, make sure to include:

import { ... } from 'pdfjs-dist';

After completing these steps, the types should function correctly (as long as there are no errors in your tsconfig).

Answer №2

If you want to bypass type checking in TypeScript, the simplest solution is to designate the returned type as 'any'.

let (findController as any) = new _pdf_find_controller.PDFFindController({
linkService: pdfLinkService,
eventBus: eventBus});

Did that successfully resolve your issue, or are you looking for a specific type declaration?

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