Bark JS
Bark parses GS1-128 barcodes and extracts the catalogued data according to the GS1 General Specifications (PDF). It can also parse other SKU-related formats to convert into GTINs in GS1, such as EAN-13, ITF-14 and UPC-A.
How to use it
npm install bark-js
Examples
Let's pretend we scan the box in this photo.
const bark = require('bark-js')
bark( '015730033004265615171019' )
// returns:
{
symbology: 'unknown',
elements: [
{
ai: '01',
title: 'GTIN',
value: '57300330042656',
raw: '57300330042656'
},
{
ai: '15',
title: 'BEST BEFORE or BEST BY',
value: '2017-10-19',
raw: '171019'
}
],
originalBarcode: '015730033004265615171019'
}If you are going to scan simple barcodes (e.g. UPC-A, EAN-13, ITF-14, etc.) you can set the assumeGtin option to treat shorter barcodes (11-14 digits) as GS1-128 with a GTIN AI:
const bark = require('bark-js')
bark( '09002490100094', { assumeGtin: true } )
// returns:
{
symbology: 'unknown',
elements: [
{
ai: '01',
title: 'GTIN',
value: '09002490100094',
raw: '09002490100094'
}
],
originalBarcode: '0109002490100094'
}Depending on your barcode reader, you may receive FNC characters that arent the <GS> (ASCII 29) character. To set the group separator yourself, pass the fnc option:
const bark = require('bark-js')
bark( '10FRIDGEX0109002490100094', { fnc: 'X' } )
// returns:
{
symbology: 'unknown',
elements: [
{
ai: '10',
title: 'BATCH/LOT',
value: 'FRIDGE',
raw: 'FRIDGEX'
},
{
ai: '01',
title: 'GTIN',
value: '09002490100094',
raw: '09002490100094'
}
],
originalBarcode: '10FRIDGEX0109002490100094'
}Depending on the type of elements in your code, the parsers may append additional fields to such as isoCurrencyCode and amount for your convenience:
const bark = require('bark-js')
bark( '393297817999' )
// returns:
{
symbology: 'unknown',
elements: [
{
ai: '3932',
title: 'PRICE',
value: '978179.99',
isoCurrencyCode: '978',
amount: '179.99',
raw: '97817999'
}
],
originalBarcode: '393297817999'
}Contributing
Pull requests to Sleavely/Bark-JS are encouraged and appreciated!