Lower-level API

The pipeline is exposed piece by piece, for tools that need the geometry rather than the markup.

Stability

These exports follow the engine, not the public API. Their signatures and the exact geometry they produce can change in a minor release, with a note in the changelog. If you build on them, pin the minor version. The stable surface is outlineSvg, outlinePathData, outlineSvgToMultiPolygon, the options they accept, the warnings, and the CLI; those only change in a major.

parseSvg → shapes (segments + resolved style + transform)
parsePathData / transformSegments → normalized M / L / C / Z segments
flattenSegments → polylines
strokePolyline → polygons covering the stroke
unionRings / nonzeroRings / xorRings → merged multipolygon
multiPolygonToPathData → path data

If you just want the merged geometry, outlineSvgToMultiPolygon returns it as a GeoJSON-style multipolygon, with the outer ring first and the holes after it.