add json5 for parsing

packages/components/package.json

@@ -105,6 +105,7 @@
         "ioredis": "^5.3.2",
         "ipaddr.js": "^2.2.0",
         "jsdom": "^22.1.0",
+        "json5": "2.2.3",
         "jsonpointer": "^5.0.1",
         "jsonrepair": "^3.11.1",
         "langchain": "^0.3.5",

packages/components/src/utils.ts

@@ -18,6 +18,7 @@ import { TextSplitter } from 'langchain/text_splitter'
 import { DocumentLoader } from 'langchain/document_loaders/base'
 import { NodeVM } from '@flowiseai/nodevm'
 import { Sandbox } from '@e2b/code-interpreter'
+import JSON5 from 'json5'
 
 export const numberOrExpressionRegex = '^(\\d+\\.?\\d*|{{.*}})$' //return true if string consists only numbers OR expression {{}}
 export const notEmptyRegex = '(.|\\s)*\\S(.|\\s)*' //return true if string is not empty or blank
@@ -1382,6 +1383,39 @@ const convertRequireToImport = (requireLine: string): string | null => {
     return null
 }
 
+/**
+ * Parse output if it's a stringified JSON or array
+ * @param {any} output - The output to parse
+ * @returns {any} - The parsed output or original output if not parseable
+ */
+const parseOutput = (output: any): any => {
+    // If output is not a string, return as-is
+    if (typeof output !== 'string') {
+        return output
+    }
+
+    // Trim whitespace
+    const trimmedOutput = output.trim()
+
+    // Check if it's an empty string
+    if (!trimmedOutput) {
+        return output
+    }
+
+    // Check if it looks like JSON (starts with { or [)
+    if ((trimmedOutput.startsWith('{') && trimmedOutput.endsWith('}')) || (trimmedOutput.startsWith('[') && trimmedOutput.endsWith(']'))) {
+        try {
+            const parsedOutput = JSON5.parse(trimmedOutput)
+            return parsedOutput
+        } catch (e) {
+            return output
+        }
+    }
+
+    // Return the original string if it doesn't look like JSON
+    return output
+}
+
 /**
  * Execute JavaScript code using either Sandbox or NodeVM
  * @param {string} code - The JavaScript code to execute
@@ -1497,7 +1531,7 @@ export const executeJavaScriptCode = async (
             // Clean up sandbox
             sbx.kill()
 
-            return output
+            return parseOutput(output)
         } catch (e) {
             throw new Error(`Sandbox Execution Error: ${e}`)
         }
@@ -1539,7 +1573,7 @@ export const executeJavaScriptCode = async (
                 streamOutput(streamOutputString)
             }
 
-            return finalOutput
+            return parseOutput(finalOutput)
         } catch (e) {
             throw new Error(`NodeVM Execution Error: ${e}`)
         }

pnpm-lock.yaml

@@ -375,6 +375,9 @@ importers:
             jsdom:
                 specifier: ^22.1.0
                 version: 22.1.0(bufferutil@4.0.8)(canvas@2.11.2(encoding@0.1.13))(utf-8-validate@6.0.4)
+            json5:
+                specifier: 2.2.3
+                version: 2.2.3
             jsonpointer:
                 specifier: ^5.0.1
                 version: 5.0.1