fix: Bun ESM compatibility for BASE_GLOBALS

Author: samsantosb

src/cache.ts

@@ -66,21 +66,21 @@ export const DEFAULT_TTL = 0; // 0 = no expiration
  * @internal
  */
 const BASE_GLOBALS: Record<string, unknown> = {
-  require,
-  module,
-  exports,
+  require: typeof require !== 'undefined' ? require : undefined,
+  module: typeof module !== 'undefined' ? module : undefined,
+  exports: typeof exports !== 'undefined' ? exports : undefined,
   console,
-  Buffer,
-  process,
+  Buffer: typeof Buffer !== 'undefined' ? Buffer : undefined,
+  process: typeof process !== 'undefined' ? process : undefined,
   setTimeout,
   setInterval,
-  setImmediate,
+  setImmediate: typeof setImmediate !== 'undefined' ? setImmediate : undefined,
   clearTimeout,
   clearInterval,
-  clearImmediate,
+  clearImmediate: typeof clearImmediate !== 'undefined' ? clearImmediate : undefined,
   queueMicrotask,
-  __dirname,
-  __filename,
+  __dirname: typeof __dirname !== 'undefined' ? __dirname : undefined,
+  __filename: typeof __filename !== 'undefined' ? __filename : undefined,
   // Global constructors
   Array,
   Object,