Module to calculate and validate check digits for redundancy checking, using f.ex. mod10 (luhn algorithm) or mod11.

gs1 checkdigit generation and validation

Validate a VIN based on origin, checkdigit, and reported year.

Implementation of Luhn mod N checkdigit algorithm

Check Digit eslint plugins

Check Digit standard Typescript configuration

Check Digit standard eslint configuration

Check Digit code formatting configuration

Standard time handling

Implementation of the Check Digit timeout algorithm for promises

Hash is a small function for Check Digit services to create a uuid derived from a hash generated from a given value.

Implementation of the standard Check Digit retry algorithm

Memoizing async functions with cache eviction on reject

Check Digit eslint plugins to enforce best practices for projects using Athena SQL.

Standard currency handling

Check Digit blessed Typescript compiler

Check Digit Spectral Config

Check Digit standard Jest configuration

[](https://travis-ci.org/jkeen/tracking_number_data)

Estonian bank reference checkdigit calculation