prevent users from using Kernel with Bun

Author: heyglassy

src/client.ts

@@ -187,6 +187,13 @@ export class Kernel {
     apiKey = readEnv('KERNEL_API_KEY'),
     ...opts
   }: ClientOptions = {}) {
+    // Check for Bun runtime in a way that avoids type errors if Bun is not defined
+    if (typeof globalThis !== 'undefined' && typeof (globalThis as any).Bun !== 'undefined' && (globalThis as any).Bun.version) {
+      throw new Errors.KernelError(
+        'The Bun runtime is not supported. Please use a different runtime.',
+      );
+    }
+
     if (apiKey === undefined) {
       throw new Errors.KernelError(
         "The KERNEL_API_KEY environment variable is missing or empty; either provide it, or instantiate the Kernel client with an apiKey option, like new Kernel({ apiKey: 'My API Key' }).",