Turning on logging of the Mapnik SQL query during map rendering - node.js

Question

I am using the npm package Mapnik with PostGIS and I want to enable logging to the console of the SQL query that Mapnik is executing, including the value of the bbox parameter, when running the render() function.
import * as mapnik from "mapnik";
async function main() {
mapnik.register_default_input_plugins();
mapnik.settings.log.level = "debug"; // something like that???
...
const vectorTile = new VectorTile(parseInt(z), parseInt(x), parseInt(y));
const map = new Map(256, 256);
new RouteLayer(vectorTile).apply(map);
map.zoomAll();
map.render(vectorTile, (err, vectorTile) => { // how to log executed sql query?
if (err) {
return rej(err);
}
return res(vectorTile.getData());
});
}
main();
...
// RouteLayer
private apply(map: mapnik.Map): void {
const config = this.createPostgisConfig(`
select
id,
geometry
from nordic_sector
where
deleted_at is null
and st_intersects(st_transform(geometry, 3857),!bbox!)
`);
const layer = new (mapnik as any).Layer(
"nordic-sector-back",
PROJECTION_3857
);
layer.datasource = new mapnik.Datasource(config);
(map as any).add_layer(layer);
}
EDIT1:
Unsuccessful attempts:
(mapnik as any).logger.set_severity((mapnik as any).severity_type.Debug);
(mapnik as any).Logger.setSeverity((mapnik as any).Logger.DEBUG);

Answer 1

In Mapnik you can configure the default logging severity level like this:
mapnik.logger.set_severity(mapnik.severity_type.Debug)