When an API array shape changes, do not only check whether the list still contains data. Compare old and new responses with JSON Deep Diff, confirm structure changes around orders, items, lines, qty, quantity, price, and unitPrice, then run the old JSONPath to prove why it is empty, extract the new key-path inventory, and update frontend list mappings with Pointer, Schema, and docs.
JSON array structure regression topic
JSON array element structure regression, items-to-lines migration, and list-field review tools
A release-review workflow for orders/items changing to nodes/lines, qty becoming quantity, price becoming unitPrice, old JSONPath empty results, and key-path inventory checks.
JSON array shape changeAPI array structure regressionJSONPath array empty resultitems to lines migrationqty to quantityorders nodes linesAPI list field mapping failure
Common lookup scenarios
orders[] becomes orders.nodes[] and frontend lists render empty
items[].qty becomes lines[].quantity and quantity mapping breaks
price becomes unitPrice and amount columns fail
Use JSONPath to prove why old items[*].sku paths are empty
Use key-path inventory to update list fields, Schema, and API docs
Recommended workflow
- Format old and new responses first
- Use JSON Deep Diff to find array nesting, field-name, and type changes
- Run the old JSONPath expression and confirm empty results
- Extract key paths for the new nodes/lines structure
- Review release notes with Pointer, Schema, and Patch outputs
Related tool entries
A release-review workflow for orders/items changing to nodes/lines, qty becoming quantity, price becoming unitPrice, old JSONPath empty results, and key-path inventory checks.
JSON deep diff
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LookupToolChakanFAQ
When an API array shape changes, do not only check whether the list still contains data. Compare old and new responses with JSON Deep Diff, confirm structure changes around orders, items, lines, qty, quantity, price, and unitPrice, then run the old JSONPath to prove why it is empty, extract the new key-path inventory, and update frontend list mappings with Pointer, Schema, and docs.
How is an array shape change different from a field rename?
A field rename changes a key, often at the same level. An array shape change changes parents, wrappers, item paths, or nesting, which can break list rendering, paging, sorting, and storage mapping.
Why does the old JSONPath return empty?
The expression still searches orders[*].items[*], while the new response may use orders.nodes[*].lines[*]. The business data can exist but the old path no longer matches.
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