Bugfix/JSON5 Parsing (#5201)

use json5 for parsing input data

packages/components/nodes/agentflow/HTTP/HTTP.ts

@@ -4,6 +4,7 @@ import FormData from 'form-data'
 import * as querystring from 'querystring'
 import { getCredentialData, getCredentialParam } from '../../../src/utils'
 import { secureAxiosRequest } from '../../../src/httpSecurity'
+import JSON5 from 'json5'
 
 class HTTP_Agentflow implements INode {
     label: string
@@ -19,34 +20,13 @@ class HTTP_Agentflow implements INode {
     credential: INodeParams
     inputs: INodeParams[]
 
-    private sanitizeJsonString(jsonString: string): string {
-        // Remove common problematic escape sequences that are not valid JSON
-        let sanitized = jsonString
-            // Remove escaped square brackets (not valid JSON)
-            .replace(/\\(\[|\])/g, '$1')
-            // Fix unquoted string values in JSON (simple case)
-            .replace(/:\s*([a-zA-Z][a-zA-Z0-9]*)\s*([,}])/g, ': "$1"$2')
-            // Fix trailing commas
-            .replace(/,(\s*[}\]])/g, '$1')
-
-        return sanitized
-    }
-
     private parseJsonBody(body: string): any {
         try {
-            // First try to parse as-is
-            return JSON.parse(body)
+            return JSON5.parse(body)
         } catch (error) {
-            try {
-                // If that fails, try to sanitize and parse
-                const sanitized = this.sanitizeJsonString(body)
-                return JSON.parse(sanitized)
-            } catch (sanitizeError) {
-                // If sanitization also fails, throw the original error with helpful message
-                throw new Error(
-                    `Invalid JSON format in body. Original error: ${error.message}. Please ensure your JSON is properly formatted with quoted strings and valid escape sequences.`
-                )
-            }
+            throw new Error(
+                `Invalid JSON format in body. Original error: ${error.message}. Please ensure your JSON is properly formatted with quoted strings and valid escape sequences.`
+            )
         }
     }