is-isbn

This npm package validates your 10-digit & 13-digit ISBN codes according to their check digits.

    const isIsbn = require('is-isbn')
    
    isIsbn.validate("030788743X") // true
    isIsbn.validate("130788743X") // false
    isIsbn.validate("0060523794") //true
    isIsbn.validate("9780670020553") // true
    isIsbn.validate("9780670020555") // false
    

No dependencies.