Inspect node types, parent links, source ranges, lines, and concise node details.
Submit the example or replace it with your own input. Source is parsed but never executed.
Explicit static behavior
The flat report makes tree relationships explicit through stable row and parent identifiers. It avoids serializing parser metadata that is not useful to inspection.
The flat report makes tree relationships explicit through stable row and parent identifiers. It avoids serializing parser metadata that is not useful to inspection.
Parsing stops above 30,000 nodes or 256 levels, and at most 10,000 report rows are returned.
Tool Swim parses source as standard ECMAScript inside a disposable Web Worker with a 2,000 ms deadline. It never calls eval, Function, imported modules, or user code.
Source and results stay in the current browser tab. The public tool makes no API request, stores no preset, and does not require an account or telemetry.
