NDJSON Converter
Convert NDJSON to pretty or compact JSON and back — streaming-line aware with per-line error reporting and skip-invalid mode.
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NDJSON input
JSON array output
Blank lines are skipped. Each remaining line must be a complete JSON value — line numbers in issues refer to physical input lines. With skip-invalid off, parsing stops at the first bad line; with it on, every bad line is reported and valid records still convert.