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troupe-standup/wizard-work/spark/json_lint_verification.md
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# JSON Linter Verification Report
## Artifact Created
**File:** /root/.hermes/wizard-outputs/spark/json_lint.py
## Purpose
A lightweight JSON linter that validates JSON files and returns structured output with:
- `valid`: boolean indicating if JSON parses correctly
- `error`: error message with line/column info for invalid files
- `type`: the JSON data type (dict, list, str, int, float, bool, null)
- `keys`: sorted list of top-level keys (for dicts)
- `length`: number of items (for lists)
## Tests Run
### Test 1: Valid JSON file (sample_valid.json)
```
$ python3 json_lint.py sample_valid.json
{"file": "sample_valid.json", "valid": true, "error": null, "type": "dict", "keys": ["name", "nested", "value"]}
```
Exit code: 0
Result: Successfully parsed dict with 3 keys
### Test 2: Invalid JSON file (sample_invalid.json)
```
$ python3 json_lint.py sample_invalid.json
{"file": "sample_invalid.json", "valid": false, "error": "JSON parse error at line 4, col 23: Invalid control character at...", "type": null, "keys": []}
```
Exit code: 1
Result: Correctly identified invalid JSON with precise error location
### Test 3: Skills inventory (skills_inventory.json)
```
$ python3 json_lint.py skills_inventory.json
{"file": "skills_inventory.json", "valid": true, "error": null, "type": "dict", "keys": ["categories", "generated_at", "profile", "skills", "total_skills"]}
```
Exit code: 0
Result: Successfully parsed large JSON file (726 lines)
### Test 4: Report file (report.json)
```
$ python3 json_lint.py report.json
{"file": "report.json", "valid": true, "error": null, "type": "dict", "keys": ["directory", "generated_at", "snippets", "summary", "total_lines", "total_size_kb", "total_snippets"]}
```
Exit code: 0
Result: Successfully parsed report JSON
## Summary
All tests passed. The JSON linter correctly:
1. Validates proper JSON files and outputs structured results
2. Detects invalid JSON with accurate line/column locations
3. Exits with code 0 for valid, 1 for invalid
4. Handles files of various sizes