crawl_redirects.js runs first, before any migration. It crawls the live BigCommerce store politely at 400ms per page, classifies every URL as product, category, blog post, or skip, maps it to the Shopify equivalent, and outputs redirects.csv — two columns, ready to upload directly into Shopify URL Redirects importer. No manual work needed.
BigCommerce to Shopify
You can change the config to make it personalized for your own needs. I will update it, as soon as I get to it.
Change the websites links to your websites in the code.