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Add centralized errorFormatter to convert various error types into readable messages, and apply it across edge functions. Replace String(error) usage with formatEdgeError, update relevant imports, fix a throw to use toError, and enhance logger to log formatted errors. Includes new errorFormatter.ts and widespread updates to 18+ edge functions plus logger integration.

supabase/functions/_shared/errorFormatter.ts

@@ -0,0 +1,94 @@
+/**
+ * Error Formatting Utility for Edge Functions
+ * 
+ * Provides robust error message extraction from various error types:
+ * - Standard Error objects
+ * - Supabase PostgresError objects (plain objects with message/details/code/hint)
+ * - Raw objects and primitives
+ * 
+ * Eliminates "[object Object]" errors by properly extracting error details.
+ */
+
+/**
+ * Format error objects for logging
+ * Handles Error objects, Supabase errors (plain objects), and primitives
+ * 
+ * @param error - Any error value
+ * @returns Formatted, human-readable error message string
+ */
+export function formatEdgeError(error: unknown): string {
+  // Standard Error objects
+  if (error instanceof Error) {
+    return error.message;
+  }
+  
+  // Object-like errors (Supabase PostgresError, etc.)
+  if (typeof error === 'object' && error !== null) {
+    const err = error as any;
+    
+    // Try common error message properties
+    if (err.message && typeof err.message === 'string') {
+      // Include additional Supabase error details if present
+      const parts: string[] = [err.message];
+      
+      if (err.details && typeof err.details === 'string') {
+        parts.push(`Details: ${err.details}`);
+      }
+      
+      if (err.hint && typeof err.hint === 'string') {
+        parts.push(`Hint: ${err.hint}`);
+      }
+      
+      if (err.code && typeof err.code === 'string') {
+        parts.push(`Code: ${err.code}`);
+      }
+      
+      return parts.join(' | ');
+    }
+    
+    // Some errors nest the actual error in an 'error' property
+    if (err.error) {
+      return formatEdgeError(err.error);
+    }
+    
+    // Some APIs use 'msg' instead of 'message'
+    if (err.msg && typeof err.msg === 'string') {
+      return err.msg;
+    }
+    
+    // Last resort: stringify the entire object
+    try {
+      const stringified = JSON.stringify(error, null, 2);
+      return stringified.length > 500 
+        ? stringified.substring(0, 500) + '... (truncated)'
+        : stringified;
+    } catch {
+      // JSON.stringify can fail on circular references
+      return 'Unknown error (could not stringify)';
+    }
+  }
+  
+  // Primitive values (strings, numbers, etc.)
+  return String(error);
+}
+
+/**
+ * Convert any error to a proper Error instance
+ * Use this before throwing to ensure proper stack traces
+ * 
+ * @param error - Any error value
+ * @returns Error instance with formatted message
+ */
+export function toError(error: unknown): Error {
+  if (error instanceof Error) {
+    return error;
+  }
+  
+  const message = formatEdgeError(error);
+  const newError = new Error(message);
+  
+  // Preserve original error as property for debugging
+  (newError as any).originalError = error;
+  
+  return newError;
+}