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thensg / luhn-checksum.js
Last active November 30, 2021 19:27
Calculate or verify a Luhn (Mod10) checksum
* MIT No Attribution
* Copyright 2015 Giovanni Thenstead
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is