CRC16 XModem for JS

Derived from pycrc16 library implementation (Link)

For using in Node.js and Browser No dependency needed Tested and worked in Node 12, Chrome 83 (Not tested in JS import yet).

Usage

Step 1: Load script via Require / Browser script tag

// For node.js
const crc16xmodem = require('crc16-xmodem'); 

<!-- For browser -->
<script src="[path-to-file]/bundle.js"></script>
<script>
    // Should return type object if working
    console.log(typeof crc16xmodem);
</script>

Step 2: Methods

// Calculate checksum with 4 digit hex output
const originalStr = '00020101021129370016A000000677010111011300660000000005802TH53037646304';
console.log(crc16xmodem.calculateChecksum(originalStr));
// Result: 8956

// Validate from last 4 digit hex checksum
const fullStr = '00020101021129370016A000000677010111011300660000000005802TH530376463048956';
console.log(crc16xmodem.validateChecksum(fullStr));
// Result: true

// or just crc16 input string with custom initial value like 0
crc16xmodem.crc16(str, initialValue);