/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#if JS_HAS_INTL_API
/**
 * Format this BigInt object into a string, using the locale and formatting
 * options provided.
 *
 * Spec PR: https://github.com/tc39/ecma402/pull/236
 */
function BigInt_toLocaleString() {
  // Step 1. Note that valueOf enforces "thisBigIntValue" restrictions.
  var x = callFunction(std_BigInt_valueOf, this);

  var locales = ArgumentsLength() ? GetArgument(0) : undefined;
  var options = ArgumentsLength() > 1 ? GetArgument(1) : undefined;

  // Step 2.
  var numberFormat;
  if (locales === undefined && options === undefined) {
    // This cache only optimizes when no explicit locales and options
    // arguments were supplied.
    if (!intl_IsRuntimeDefaultLocale(numberFormatCache.runtimeDefaultLocale)) {
      numberFormatCache.numberFormat = intl_NumberFormat(locales, options);
      numberFormatCache.runtimeDefaultLocale = intl_RuntimeDefaultLocale();
    }
    numberFormat = numberFormatCache.numberFormat;
  } else {
    numberFormat = intl_NumberFormat(locales, options);
  }

  // Step 3.
  return intl_FormatNumber(numberFormat, x, /* formatToParts = */ false);
}
#endif  // JS_HAS_INTL_API