feat(isEAN): implement isEAN validator #1244
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Looks great. Good job @hamzahejja! Can you take care of the 2 minor issues
src/lib/isEAN.js
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| * with exact numberic matching of 8 or 13 digits [0-9] | ||
| */ | ||
| const LENGTH_EAN_8 = 8; | ||
| const validEanRegex = /(?<!\d)(\d{8}|\d{13})(?!\d)$/; |
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RegExp lookbehind assertions are an ES2018 feature. They are not supported in all platforms.
By the way, can't a much simpler regex like /^(\d{8}|\d{13})$/ do the trick?
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@tux-tn Yeah you're right, the /^(\d{8}|\d{13})$/ is sufficient to detect a consecutive sequence of 8-digits or 13-digits only ... Forgot about the lookbehind assertions being an ES2018 feature. Thanks! I've just modified it 👍
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| const remainder = 10 - (checksum % 10); | ||
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| return remainder < 10 ? remainder : 0; |
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The case where remainder equals 10 is uncovered in mocha tests. Can you add a test case?
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@tux-tn Changes addressed accordingly 👍 |
EAN: European Article Number.
Wikipedia: International Article Number
isEAN(str)string validator 🎉