add a flag to generate empty tiles

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Is it possible to add a flag to the tiler so that empty tiles are generated where there are no features?

Use case - we have a static dataset of country, province and district boundaries that don't change much, I want to generate a folder of tiles and store them in Google Cloud Storage in their quad-tree folder structure. Where we run into problems is using deck.gl... when you pan around the map it will ask for tiles that might not have been generated.

i.e. zoom level 10, x 1000, y 1000 might be in the middle of the ocean, but deck.gl will still go off to Google Cloud Storage and ask for that tile, resulting in a 404 error and spamming the browser console with errors.

Is there a way we can ensure that vector tiles are generated for areas where there are no features?

Start by locating the tiler's command-line option handling and tile-generation path; the issue names no files or tests. Reproduce the missing-tile case with an area containing no features, then define completion as a flag that emits empty tiles for the expected quadtree paths without features.

Written by the indexing model from the issue text.