Function mergeDeepProperties

out/cli.cjs:73265–73271

(a4, b7, prop, caseless)

      return utils_default.merge.call({ caseless }, target, source);
    } else if (utils_default.isPlainObject(source)) {
      return utils_default.merge({}, source);
    } else if (utils_default.isArray(source)) {
      return source.slice();
    }
    return source;
  }
  function mergeDeepProperties(a4, b7, prop, caseless) {
    if (!utils_default.isUndefined(b7)) {
      return getMergedValue(a4, b7, prop, caseless);
    } else if (!utils_default.isUndefined(a4)) {