rate-limiter-flexible/lib/helper/isRateLimiterCompatible.js

Node.js atomic and non-atomic counters, rate limiting tools, protection from DoS and brute-force attacks at scale

const RateLimiterAbstract = require('../RateLimiterAbstract');
const RateLimiterCompatibleAbstract = require('../RateLimiterCompatibleAbstract');

module.exports = function isRateLimiterCompatible(obj) {
  return obj instanceof RateLimiterAbstract || obj instanceof RateLimiterCompatibleAbstract;
};