This code can be used either as a javascript/typescript library, or as an executable.
Let's assume we have two map archives: map1.zip and map2.zip. To merge them, we do:
node dist/index.js -o merged.zip map1.zip map2.zip
The tool can work with .zip or .mbtiles files, but can't work with a mix of both.
There is a single function exposed in this library:
export declare function mergeMaps(input: string[], output: string): Promise<void>;
npm test will run the tests.