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import Metadata from '../metadata.js'
import matchesEntirely from './matchesEntirely.js'
import extractNationalNumber from './extractNationalNumber.js'
import checkNumberLength from './checkNumberLength.js'
import getCountryCallingCode from '../getCountryCallingCode.js'
/**
* Sometimes some people incorrectly input international phone numbers
* without the leading `+`. This function corrects such input.
* @param {string} number — Phone number digits.
* @param {string?} country
* @param {string?} callingCode
* @param {object} metadata
* @return {object} `{ countryCallingCode: string?, number: string }`.
*/
export default function extractCountryCallingCodeFromInternationalNumberWithoutPlusSign(
number,
country,
callingCode,
metadata
) {
const countryCallingCode = country ? getCountryCallingCode(country, metadata) : callingCode
if (number.indexOf(countryCallingCode) === 0) {
metadata = new Metadata(metadata)
metadata.selectNumberingPlan(country, callingCode)
const possibleShorterNumber = number.slice(countryCallingCode.length)
const {
nationalNumber: possibleShorterNationalNumber,
} = extractNationalNumber(
possibleShorterNumber,
metadata
)
const {
nationalNumber
} = extractNationalNumber(
number,
metadata
)
// If the number was not valid before but is valid now,
// or if it was too long before, we consider the number
// with the country calling code stripped to be a better result
// and keep that instead.
// For example, in Germany (+49), `49` is a valid area code,
// so if a number starts with `49`, it could be both a valid
// national German number or an international number without
// a leading `+`.
if (
(
!matchesEntirely(nationalNumber, metadata.nationalNumberPattern())
&&
matchesEntirely(possibleShorterNationalNumber, metadata.nationalNumberPattern())
)
||
checkNumberLength(nationalNumber, metadata) === 'TOO_LONG'
) {
return {
countryCallingCode,
number: possibleShorterNumber
}
}
}
return { number }
}
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