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libphonenumber-js

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A simpler (and smaller) rewrite of Google Android's libphonenumber library in javascript

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// Should be the same as `DIGIT_PLACEHOLDER` in `libphonenumber-metadata-generator`. export const DIGIT_PLACEHOLDER = 'x' // '\u2008' (punctuation space) const DIGIT_PLACEHOLDER_MATCHER = new RegExp(DIGIT_PLACEHOLDER) // Counts all occurences of a symbol in a string. // Unicode-unsafe (because using `.split()`). export function countOccurences(symbol, string) { let count = 0 // Using `.split('')` to iterate through a string here // to avoid requiring `Symbol.iterator` polyfill. // `.split('')` is generally not safe for Unicode, // but in this particular case for counting brackets it is safe. // for (const character of string) for (const character of string.split('')) { if (character === symbol) { count++ } } return count } // Repeats a string (or a symbol) N times. // http://stackoverflow.com/questions/202605/repeat-string-javascript export function repeat(string, times) { if (times < 1) { return '' } let result = '' while (times > 1) { if (times & 1) { result += string } times >>= 1 string += string } return result + string } export function cutAndStripNonPairedParens(string, cutBeforeIndex) { if (string[cutBeforeIndex] === ')') { cutBeforeIndex++ } return stripNonPairedParens(string.slice(0, cutBeforeIndex)) } export function closeNonPairedParens(template, cut_before) { const retained_template = template.slice(0, cut_before) const opening_braces = countOccurences('(', retained_template) const closing_braces = countOccurences(')', retained_template) let dangling_braces = opening_braces - closing_braces while (dangling_braces > 0 && cut_before < template.length) { if (template[cut_before] === ')') { dangling_braces-- } cut_before++ } return template.slice(0, cut_before) } export function stripNonPairedParens(string) { const dangling_braces =[] let i = 0 while (i < string.length) { if (string[i] === '(') { dangling_braces.push(i) } else if (string[i] === ')') { dangling_braces.pop() } i++ } let start = 0 let cleared_string = '' dangling_braces.push(string.length) for (const index of dangling_braces) { cleared_string += string.slice(start, index) start = index + 1 } return cleared_string } export function populateTemplateWithDigits(template, position, digits) { // Using `.split('')` to iterate through a string here // to avoid requiring `Symbol.iterator` polyfill. // `.split('')` is generally not safe for Unicode, // but in this particular case for `digits` it is safe. // for (const digit of digits) for (const digit of digits.split('')) { // If there is room for more digits in current `template`, // then set the next digit in the `template`, // and return the formatted digits so far. // If more digits are entered than the current format could handle. if (template.slice(position + 1).search(DIGIT_PLACEHOLDER_MATCHER) < 0) { return } position = template.search(DIGIT_PLACEHOLDER_MATCHER) template = template.replace(DIGIT_PLACEHOLDER_MATCHER, digit) } return [template, position] }