;-)

function fancyBarcode(input) {
    let patternOne = /^(?<start>@#+)(?<barcode>[A-Z][A-Za-z0-9]{4,}[A-Z])(?<end>@#+)$/
    let patternTwo = /\d/g

    let number = input.shift()

    let digits = 0
    for (let i = 0; i < number; i++) {
        let currBarcode = input[i].match(patternOne)

        if (currBarcode !== null) {
            let allDigits = '' // CORRECTION
            currBarcode = currBarcode[0].toString() // CORRECTION
            digits = currBarcode.match(patternTwo)
            if (patternTwo.test(digits)) {

                digits.forEach(digit => {
                    allDigits = allDigits + digit
                });
                // digits = 0 /// ???
                console.log(`Product group: ${allDigits}`);
            } else {
                console.log('Product group: 00');
            }
        } else {
            console.log("Invalid barcode");
        }
    }
}