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examples/3d/streamWorker.js

@@ -0,0 +1,68 @@
+// Web Worker for handling streaming response parsing
+self.onmessage = async function(e) {
+    const { url, body } = e.data;
+
+    try {
+        const response = await fetch(url, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: body
+        });
+
+        if (!response.ok) {
+            let errorMessage = `请求失败 (${response.status})`;
+            try {
+                const data = await response.json();
+                if (data?.error) {
+                    errorMessage = data.error;
+                }
+            } catch (err) {
+                // ignore
+            }
+            self.postMessage({ type: 'error', message: errorMessage });
+            return;
+        }
+
+        if (!response.body) {
+            self.postMessage({ type: 'error', message: 'No response body' });
+            return;
+        }
+
+        const reader = response.body.getReader();
+        const decoder = new TextDecoder();
+        let buffer = '';
+
+        while (true) {
+            const { value, done } = await reader.read();
+            if (done) break;
+
+            buffer += decoder.decode(value, { stream: true });
+            const lines = buffer.split('\n');
+            buffer = lines.pop() || '';
+
+            for (const line of lines) {
+                if (!line.trim()) continue;
+
+                try {
+                    const message = JSON.parse(line);
+                    self.postMessage({ type: 'message', message: message });
+                } catch (err) {
+                    // ignore parse errors
+                }
+            }
+        }
+
+        if (buffer.trim()) {
+            try {
+                const message = JSON.parse(buffer);
+                self.postMessage({ type: 'message', message: message });
+            } catch (err) {
+                // ignore
+            }
+        }
+
+        self.postMessage({ type: 'complete' });
+    } catch (err) {
+        self.postMessage({ type: 'error', message: err.message });
+    }
+};