Verhoeff Check

Find Verhoeff check digit

checksum(number)

returns checksum digit for a number

$ var verhoeff = require('@skylab/verhoeff');
$ var num = 78639;
$ var checksum = verhoeff.checksum(num);
$ console.log(checksum);
2

Verifying if a number is valid

validate(number)

verifies whether a number has a valid verhoeff checksum digit at end

$ var verify = verhoeff.validate(786392);
$ console.log(verify);
true

LICENSE

MIT License