fix: better handle for RetryError

Author: AnotiaWang

utils/errors.ts

@@ -1,25 +1,50 @@
-import { APICallError } from 'ai'
+import { APICallError, RetryError } from 'ai'
+
+function handleApiCallError(operation: string, error: APICallError) {
+  let message = error.message
+  if (error.statusCode) message += ` (${error.statusCode})`
+  if (error.cause) message += `\nCause: ${error.cause}`
+  if (error.responseBody) message += `\nResponse: ${error.responseBody}`
+  if (error.url) message += `\nURL: ${error.url}`
+
+  console.error(`[${operation}]`, error, {
+    statusCode: error.statusCode,
+    response: error.responseBody,
+    cause: error.cause,
+    stack: error.stack,
+    isRetryable: error.isRetryable,
+    url: error.url,
+  })
+  throw new Error(message)
+}
+
+function handleRetryError(operation: string, error: RetryError) {
+  if (APICallError.isInstance(error.lastError)) {
+    handleApiCallError(operation, error.lastError)
+  }
+  let message = error.message
+  if (error.cause) message += `\nCause: ${error.cause}`
+  if (error.stack) message += `\nStack: ${error.stack}`
+  if (error.reason) message += `\nReason: ${error.reason}`
+
+  console.error(`[${operation}]`, error, {
+    cause: error.cause,
+    stack: error.stack,
+    lastError: error.lastError,
+    reason: error.reason,
+    errors: error.errors,
+  })
+  throw new Error(message)
+}
 
 /**
  * Parse an error thrown by the AI SDK, and re-throw it with a human-readable message
  */
 export function throwAiError(operation: string, error: unknown) {
   if (APICallError.isInstance(error)) {
-    let message = error.message
-    if (error.statusCode) message += ` (${error.statusCode})`
-    if (error.cause) message += `\nCause: ${error.cause}`
-    if (error.responseBody) message += `\nResponse: ${error.responseBody}`
-    if (error.url) message += `\nURL: ${error.url}`
-
-    console.error(`[${operation}]`, error, {
-      statusCode: error.statusCode,
-      response: error.responseBody,
-      cause: error.cause,
-      stack: error.stack,
-      isRetryable: error.isRetryable,
-      url: error.url,
-    })
-    throw new Error(message)
+    handleApiCallError(operation, error)
+  } else if (RetryError.isInstance(error)) {
+    handleRetryError(operation, error)
   } else {
     console.error(`[${operation}]`, error)
   }