Script downloads names of OSM waterways without name tag from ZBGIS WMS using GetFeatureInfo.
Install Node 14, clone the repository and install libraries with npm i.
node . left bottom right top > output.geojson
Example:
node . 20.51 48.52 21.23 49.45 > snv.geojson
Process writes its progress to stderr and GeoJSON output to stdout.
Resulting GeoJSON will contain points (nodes) located in the middle of the waterway segments and will have a name property.