libphonenumber-js/es6/isPossibleNumber_.js

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

import Metadata from './metadata';
import checkNumberLength from './helpers/checkNumberLength';
export default function isPossiblePhoneNumber(input, options, metadata) {
  /* istanbul ignore if */
  if (options === undefined) {
    options = {};
  }

  metadata = new Metadata(metadata);

  if (options.v2) {
    if (!input.countryCallingCode) {
      throw new Error('Invalid phone number object passed');
    }

    metadata.selectNumberingPlan(input.countryCallingCode);
  } else {
    if (!input.phone) {
      return false;
    }

    if (input.country) {
      if (!metadata.hasCountry(input.country)) {
        throw new Error("Unknown country: ".concat(input.country));
      }

      metadata.country(input.country);
    } else {
      if (!input.countryCallingCode) {
        throw new Error('Invalid phone number object passed');
      }

      metadata.selectNumberingPlan(input.countryCallingCode);
    }
  }

  if (metadata.possibleLengths()) {
    return isPossibleNumber(input.phone || input.nationalNumber, metadata);
  } else {
    // There was a bug between `1.7.35` and `1.7.37` where "possible_lengths"
    // were missing for "non-geographical" numbering plans.
    // Just assume the number is possible in such cases:
    // it's unlikely that anyone generated their custom metadata
    // in that short period of time (one day).
    // This code can be removed in some future major version update.
    if (input.countryCallingCode && metadata.isNonGeographicCallingCode(input.countryCallingCode)) {
      // "Non-geographic entities" did't have `possibleLengths`
      // due to a bug in metadata generation process.
      return true;
    } else {
      throw new Error('Missing "possibleLengths" in metadata. Perhaps the metadata has been generated before v1.0.18.');
    }
  }
}
export function isPossibleNumber(nationalNumber, metadata) {
  //, isInternational) {
  switch (checkNumberLength(nationalNumber, metadata)) {
    case 'IS_POSSIBLE':
      return true;
    // This library ignores "local-only" phone numbers (for simplicity).
    // See the readme for more info on what are "local-only" phone numbers.
    // case 'IS_POSSIBLE_LOCAL_ONLY':
    // 	return !isInternational

    default:
      return false;
  }
}
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