Invalid input file written to (and overwrites) unmatched input file.

[PaulTomchik]

Invalid input overwrites the unmatched features in the [output filename].unmatched.geojson file.

See:

sharedstreets-js/src/commands/match.ts

Line 677 in cd5b60b

writeFileSync(outFile + ".unmatched.geojson", invalidJsonOut);