JSON Unflatten

Rebuild a nested JSON object from dot-path keys, expanding numeric segments into arrays.

Description

Rebuild a nested JSON object from dot-path keys, expanding numeric segments into arrays.

JSON Unflatten: Rebuild a nested JSON object from dot-path keys, expanding numeric segments into arrays.

When to use JSON Unflatten

Use this JSON operation to transform or present valid JSON while preserving the intended values and structural relationships.

Flat map
Dot-path keyed leaves.

How JSON Unflatten works

Rebuild a nested JSON object from dot-path keys, expanding numeric segments into arrays. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1

Document
Rebuilt nested document.

Limitations and assumptions

  • JSON does not represent comments, references, dates, binary values, non-finite numbers, duplicate-key meaning, or arbitrary object prototypes. Flattening requires an escaping convention, and pretty printing or minification does not validate application schemas.
  • Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Alternative or Complementary approaches

Parse and schema-validate untrusted data, document path escaping and collision rules, and round-trip transformed structures with representative edge cases.

References

  1. JSON — Wikipedia contributors

Similar or alternative tools

  • JSON Flatten

    Flatten a JSON object into single-level dot-path keys pointing at primitive leaves.

  • JSON Patch Applier

    Apply a minimal RFC 6902-style add/remove/replace patch with RFC 6901 pointers to a JSON document.

  • JSON Diff

    Produce a minimal deterministic RFC 6902-style add/remove/replace patch turning one JSON document into another.

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