When you're talking to an open source dev, just remember that they are literally giving you their time for free, and they are people who don't like to be treated poorly.
Edit: Just to be clear, I don’t mean any ill will toward the guy. He’s frustrated and he’s just taking it out in the wrong venue at the wrong people, but that doesn’t mean he’s a bad person.
Edit 2: The reinstalling he’s talking about is NPM. So just running npm install. It’s because he tried removing the node_modules directory, which is a reasonable thing to do, but it means you need to reinstall the modules with that command.
I can see how you got there, but I'm actually not saying you need to understand any programming languages at all. If the code is out there, and the product is worthwhile, the community can and will vet it.
Like I responded to the other guy, you put a level of trust in anything you use. You can pay for a product and expect polish and support, or you can go the open source route, the DIY hobbyist route, and expect to have to do more yourself. You might have to do research on a product before you trust it. This isn't a radical concept to me. If I was putting together an RC car, I would do research on the motor to make sure it was unlikely to fail catastrophically.