What options are there for Javascript open source e-commerce frameworks for experienced developers?

I have just began the building of a new e-commerce platform for a client.

The website needs to be a straight forward online shop with various products and a customised front end.

I don't want to reinvent the wheel when it comes to e-commerce. Building a whole bespoke backend infrastructure (linked databases, admin log in, stock for products, payment portals etc) for such a simple e-commerce concept seems like overkill.

However at the same time I don't want to use platforms like Woo-commerce, shopify or squarespace because they are extremely bulky and limiting pieces of software.

What options are there for web developers creating new e-commerce projects that allows the developer to focus on the look and feel of the product with the backend sorted by the framework? I would prefer a modern node.js framework.

I've done some research and was surprised that there were so few options where you didn't have to pay high fees.

As an example of what I mean is the classic Rails Blog Engine (https://buttercms.com/rails-blog-engine/). It creates the scaffolding for your blog so you can do all the rest. Is there a node.js equivalent for e-commerce?