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17 lines
545 B
JavaScript
17 lines
545 B
JavaScript
/**
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* @description - function that takes 10 digits and returns a string of the formatted phone number e.g.: 1234567890 -> (123) 456-7890
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* @param {string} phoneNumber
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* @returns {string} - Format to (XXX) XXX-XXXX pattern
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*/
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const formatPhoneNumber = (phoneNumber) => {
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if ((phoneNumber.length !== 10) || isNaN(phoneNumber)) {
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// return "Invalid phone number."
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throw new TypeError('Invalid phone number!')
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}
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let index = 0
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return '(XXX) XXX-XXXX'.replace(/X/g, () => phoneNumber[index++])
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}
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export default formatPhoneNumber
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