I'm facing issues with using the same package in different JavaScript projects and I'm looking for a solution other than modifying the original package. Here is how my project setup looks like:
Project A This project contains various classes that are utilized in multiple places. It is published as a package on the npm repository.
Project B Project B depends on Project A (via npm) and creates instances of the classes provided by it. It serves as a function repository that generates instances of Project A.
Project C Similar to Project B, Project C also depends on Project A (via npm). The goal of this project is to generate instances from Project B and verify if they are valid Project A instances.
The issue arises when Project C tries to check the instanceof for instances generated by Project B, as it always returns false. Instances are created by importing the generator function from one project to another using require(filepath) and then executing it.
Perhaps an example would clarify things better:
Project A
class A {
// ...
}
Project B
import { A } from 'npm-package-name';
export const generator = () => new A();
Project C
import { A } from 'npm-package-name';
const { generator } = require('...');
const a = generator();
return a instanceof A; // false
I attempted to publish Project A as an npm package, believing that the definitions would be shared across projects somehow. Unfortunately, that approach did not work as expected.