Nice, I might try your API for my ISBN extractor / formatter at https://github.com/infojunkie/isbn-info.js
Right now, I use node-isbn https://www.npmjs.com/package/node-isbn which mostly works well but is getting old in the tooth.
Right now, I use node-isbn https://www.npmjs.com/package/node-isbn which mostly works well but is getting old in the tooth.
I wrote a Go SDK[1] for the service, maybe I'll try writing one in TypeScript tomorrow.