Help with tiles

I have an extension:

In tilemap.g.ts, the file looks like this:

// Auto-generated code. Do not edit.
namespace myTiles {
    //% fixedInstance jres blockIdentity=images._tile
    export const transparency16 = image.ofBuffer(hex``);

}
// Auto-generated code. Do not edit.

So when you import it into a game, TypeScript complains that you can’t redeclare transparency16. How can I fix this?