Barcode-Parsing

this package has a fairly narrow scope and is used in conjunction with an Ionic project to read values provided by a physical wedge scanner and parse out the values. I am working on wrapping up the scanning angular component that consumes this directly.

Usage

``javascript
const barcodeParser = new BarcodeParser({
readers: [
Symbologies.Code39,
Symbologies.ITF8,
...Symbologies.GTINX // This spreads to support all GTIN lengths 8-14
],
readerConfigurations: [
{
symbology: Symbologies.Code39,
values: [
{
length: 2,
start: 0,
valueType: 'foo'
},
{
length: 3,
start: 2,
valueType: 'bar'
}
]
}
]
});



const itfResult = barcodeParser.parse(']I010734074010258');
// {
// symbology: 'itf_14',
// rawValue: ']I010734074010258',
// checkDigit: 8,
// success: true,
// values: '1073407401025'
// }

// the below input with spaces would never be valid from a scanner, the spaces would instead be an invisible group seperator. This library replaces the GS character with a space before parsing so it works for both illustrative purposes and testing.
const code128Result = barcodeParser.parse(']C100111111111111111111101234 30100 310600100');
code128Result.pluck(AICode.BatchLot) // '1234'
code128Result.pluck(AICode.SerialShippingContainerCode) // '111111111111111111'
code128Result.pluck(AICode.CountOfItems) // '100'
code128Result.pluck(AICode.ProductNetWeightKg) // .0001

// {
// symbology: 'gs1_128',
// rawValue: ']C100111111111111111111101234 30100 310600100',
// checkDigit: -1,
// success: true,
// values: [
// {
// code: '10',
// value: '1234'
// },
// {
// code: '00',
// value: '111111111111111111'
// },
// {
// code: '30',
// value: '100'
// },
// {
// 'code': '310',
// 'value': 0.0001
// }
// ]
// }

const code39Result = barcodeParser.parse(']A01234567777777');
code39Result.success // true
code39Result.errorMessage // undefined
code39Result.pluck('foo') // '12'
code39Result.pluck('bar') // '345'
code39Result.pluck('bizz') // undefined
{
symbology: 'code_39',
rawValue: ']A01234567777777',
checkDigit: -1,
success: true,
values: [
{
code: 'foo',
value: '12'
},
{
code: 'bar',
value: '345'
}
]
}

const invalidInputResult = barcodeParser.parse(']Z00000000');
invalidInputResult.success // false
invalidInputResult.errorMessage // 'No Reader Found'
// {
// symbology: null,
// rawValue: ']Z00000000',
// checkDigit: -1,
// success: false,
// values: [],
// errorMessage: 'No Reader Found'
// }
``