Reversible Dot-Path Encoder for Nested Objects with Round-Trip Proof

How it works

1. 1.Manual Trigger starts the run
2. 2.Code node emits three demo records: two nested objects and one non-object payload
3. 3.Code node encodes each payload into "$.path = value" lines using JSON.stringify for leaves and {} / [] for empties
4. 4.Set node (includeOtherFields) builds textBlob by joining lines with newlines
5. 5.Code node decodes the lines, rebuilds the tree and deep-compares it to the original
6. 6.If node routes roundTripMatch=true to the verified branch, false to the failure branch
7. 7.Two NoOp nodes feed Merge (append, 2 inputs)
8. 8.Final Code node in runOnceForAllItems returns exactly one aggregated report

Use cases

• Passing nested objects through intermediate text fields without losing structure
• Verifying that a rebuilt structure matches the original before the next stage
• Diagnosing JSON parse errors caused by [object Object]
• Producing a per-run audit report of encoding quality

Requirements

• n8n 2.46.7 or newer
• No credentials and no external connectivity
• Input items shaped { recordId, payload } to replace the demo data

Setup and testing in n8n

1. Import the JSON and open the workflow
2. Click Execute Workflow
3. Inspect the encoder output: no [object Object] string appears
4. Inspect the final report: 3 records, 2 matched, 1 failed (REC-003)
5. Add a record with nulls and empty arrays and confirm it still matches
6. Add a non-object payload and confirm it appears in failedRecordIds

Service Value

Ready-made workflow template for automation delivery and service execution.