astro/packages/db/tsconfig.virtual.json

{
  // We want to avoid defineTable() and defineDb() import hints
  // from the runtime config export instead of astro:db.
  // We exclude runtime/virtual from the base types,
  // and generate to a separate _internal/ directory
  // for our virtual module (virtual.d.ts) to reference.
  "extends": "../../tsconfig.base.json",
  "files": ["./src/runtime/virtual.ts"],
  "compilerOptions": {
    "outDir": "./dist/_internal"
  }
}