quran/node_modules/libphonenumber-js/es6/helpers/extension/extractExtension.js

import createExtensionPattern from './createExtensionPattern.js'; // Regexp of all known extension prefixes used by different regions followed by
// 1 or more valid digits, for use when parsing.

var EXTN_PATTERN = new RegExp('(?:' + createExtensionPattern() + ')$', 'i'); // Strips any extension (as in, the part of the number dialled after the call is
// connected, usually indicated with extn, ext, x or similar) from the end of
// the number, and returns it.

export default function extractExtension(number) {
  var start = number.search(EXTN_PATTERN);

  if (start < 0) {
    return {};
  } // If we find a potential extension, and the number preceding this is a viable
  // number, we assume it is an extension.


  var numberWithoutExtension = number.slice(0, start);
  var matches = number.match(EXTN_PATTERN);
  var i = 1;

  while (i < matches.length) {
    if (matches[i]) {
      return {
        number: numberWithoutExtension,
        ext: matches[i]
      };
    }

    i++;
  }
}
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