Files
JavaScript/String/FormatPhoneNumber.js
Roland Hummel 86d333ee94 feat: Test running overhaul, switch to Prettier & reformat everything (#1407)
* chore: Switch to Node 20 + Vitest

* chore: migrate to vitest mock functions

* chore: code style (switch to prettier)

* test: re-enable long-running test

Seems the switch to Node 20 and Vitest has vastly improved the code's and / or the test's runtime!

see #1193

* chore: code style

* chore: fix failing tests

* Updated Documentation in README.md

* Update contribution guidelines to state usage of Prettier

* fix: set prettier printWidth back to 80

* chore: apply updated code style automatically

* fix: set prettier line endings to lf again

* chore: apply updated code style automatically

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Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Lars Müller <34514239+appgurueu@users.noreply.github.com>
2023-10-04 02:38:19 +05:30

17 lines
543 B
JavaScript

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