Detect and expand JSON-serialized nested columns#46
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Flat JSON objects (e.g. response: {Q0:4, Q1:3}) are now expanded into
dotted sub-variables (response.Q0, response.Q1) in variableMeasured with
correct types and min/max tracking. JSON arrays of objects are extracted
into separate Psych-DS compliant CSV files ({stem}_measure-{col}_data.csv)
with trial_index and element_index as join keys.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
🦋 Changeset detectedLatest commit: 75e37f9 The changes in this PR will be included in the next version bump. This PR includes changesets to release 3 packages
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…ation typeof never returns "array" so TypeScript rejected the assignment and comparison. Widening to string allows the custom "array" tag used to distinguish array-of-objects columns from plain objects. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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@Mandyx22 Can you show an example of what the final result looks like when there are nested tables? |
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Flat JSON object columns (e.g. response: {"Q0":4,"Q1":3}) are now expanded into dotted sub-variables (response.Q0, response.Q1) in variableMeasured, with correct types and min/max tracking. The parent variable is registered with value: "object" and no levels.
JSON array-of-objects columns (e.g. mouse_tracking_data: [{x,y,t},...]) are extracted into separate Psych-DS compliant CSV files named {stem}_measure-{col}_data.csv, with trial_index and element_index as join keys back to the parent file.
Both cases work from JSON and CSV input — CSV JSON strings are detected and parsed during the existing type coercion step.
Run npm test — all 30 tests pass including new metadata-nested-columns.test.ts
Run CLI against dev/ian-chat/OSF data.csv and confirm response sub-variables appear in dataset_description.json
Run CLI against dev/v8-data/mouse_extension/Mouse Extension.json and confirm a separate _measure-mouse-tracking-data_data.csv is created