重构请求逻辑，增加 fetch 超时与错误处理，并配置 pnpm 工作区

.gitignore

@@ -52,6 +52,7 @@ build/Release
 
 node_modules/
 jspm_packages/
+.omo/run-continuation/
 
 # Snowpack dependency directory (https://snowpack.dev/)
 

pnpm-workspace.yaml

@@ -0,0 +1,4 @@
+allowBuilds:
+  esbuild: true
+  sharp: true
+  workerd: true

src/index.js

@@ -26,10 +26,12 @@ async function handleRequest(request) {
 		const location = getRandomLocationInState(state);
 		const apiUrl = `https://nominatim.openstreetmap.org/reverse?format=json&lat=${location.lat}&lon=${location.lng}&zoom=18&addressdetails=1`;
 
-		const response = await fetch(apiUrl, {
-			headers: { 'User-Agent': 'Cloudflare Worker' },
+		const data = await fetchJson(apiUrl, {
+			headers: { 'User-Agent': 'Real-US-Address-Generator-API/1.0' },
 		});
-		const data = await response.json();
+		if (!data) {
+			break;
+		}
 
 		if (data && data.address) {
 			if (data.address.country_code === 'us') {
@@ -66,8 +68,7 @@ async function handleRequest(request) {
 		);
 	}
 
-	const userResp = await fetch('https://fakerapi.it/api/v1/persons?_quantity=1&_locale=en_US');
-	const userJson = await userResp.json();
+	const userJson = await fetchJson('https://fakerapi.it/api/v1/persons?_quantity=1&_locale=en_US');
 	let firstName, lastName;
 	if (userJson && userJson.data && userJson.data.length > 0) {
 		const user = userJson.data[0];
@@ -170,6 +171,29 @@ async function handleRequest(request) {
 	});
 }
 
+async function fetchJson(url, init = {}) {
+	let response;
+	try {
+		response = await fetch(url, {
+			...init,
+			signal: AbortSignal.timeout(5000),
+		});
+	} catch {
+		return null;
+	}
+
+	const contentType = response.headers.get('content-type') || '';
+	if (!response.ok || !contentType.includes('application/json')) {
+		return null;
+	}
+
+	try {
+		return await response.json();
+	} catch {
+		return null;
+	}
+}
+
 function getRandomLocationInState(state) {
 	const stateCoordinates = {
 		// US States