Fix CJS imports

Author: yisyang

src/wrappers/cache.js

@@ -1,8 +1,13 @@
 import createDebug from 'debug';
-import memoizer from 'lru-memoizer';
 import { promisify, callbackify } from 'util';
 
+// CJS import workaround for lru-memoizer
+import { createRequire } from 'module';
+const require = createRequire(import.meta.url);
+const memoizer = require('lru-memoizer');
+
 const logger = createDebug('jwks');
+
 function cacheWrapper(client, { cacheMaxEntries = 5, cacheMaxAge = 600000 }) {
   logger(`Configured caching of signing keys. Max: ${cacheMaxEntries} / Age: ${cacheMaxAge}`);
   return promisify(memoizer({

src/wrappers/rateLimit.js

@@ -1,8 +1,12 @@
 import createDebug from 'debug';
-import limiterPkg from 'limiter';
+
+// CJS → named export for limiter
+import { createRequire } from 'module';
+const require = createRequire(import.meta.url);
+const { RateLimiter } = require('limiter');
+
 import JwksRateLimitError from '../errors/JwksRateLimitError.js';
 
-const { RateLimiter } = limiterPkg;
 const logger = createDebug('jwks');
 function rateLimitWrapper(client, { jwksRequestsPerMinute = 10 }) {
   const getSigningKey = client.getSigningKey.bind(client);

src/wrappers/request.js

@@ -1,6 +1,9 @@
-import http from 'http';
-import https from 'https';
-import urlUtil from 'url';
+// CommonJS imports
+import { createRequire } from 'module';
+const require = createRequire(import.meta.url);
+const http = require('http');
+const https = require('https');
+const urlUtil = require('url');
 
 const request = (options) => {
   if (options.fetcher) {