fix(core): Improve streaming support and timeout handling; add browser streaming & timeout tests and README clarifications

test/test.timeout.ts

@@ -0,0 +1,60 @@
+import { tap, expect } from '@git.zone/tstest/tapbundle';
+import { SmartRequest } from '../ts/index.js';
+
+tap.test('should clear timeout when request completes before timeout', async () => {
+  // Set a long timeout that would keep the process alive if not cleared
+  const response = await SmartRequest.create()
+    .url('https://httpbin.org/delay/1') // 1 second delay
+    .timeout(10000) // 10 second timeout (much longer than needed)
+    .get();
+  
+  const data = await response.json();
+  expect(data).toBeDefined();
+  
+  // The test should complete quickly, not wait for the 10 second timeout
+  // If the timeout isn't cleared, the process would hang for 10 seconds
+});
+
+tap.test('should timeout when request takes longer than timeout', async () => {
+  let errorThrown = false;
+  
+  try {
+    // Try to fetch with a very short timeout
+    await SmartRequest.create()
+      .url('https://httpbin.org/delay/3') // 3 second delay
+      .timeout(100) // 100ms timeout (will fail)
+      .get();
+  } catch (error) {
+    errorThrown = true;
+    expect(error.message).toContain('Request timed out');
+  }
+  
+  expect(errorThrown).toBeTrue();
+});
+
+tap.test('should not leak timers with multiple successful requests', async () => {
+  // Make multiple requests with timeouts to ensure no timer leaks
+  const promises = [];
+  
+  for (let i = 0; i < 5; i++) {
+    promises.push(
+      SmartRequest.create()
+        .url('https://httpbin.org/get')
+        .timeout(5000) // 5 second timeout
+        .get()
+        .then(response => response.json())
+    );
+  }
+  
+  const results = await Promise.all(promises);
+  
+  // All requests should complete successfully
+  expect(results).toHaveLength(5);
+  results.forEach(result => {
+    expect(result).toBeDefined();
+  });
+  
+  // Process should exit cleanly after this test without hanging
+});
+
+export default tap.start();