Function existing

packages/core/src/sync/index.ts:144–146

(id)

  for (const sourceModel of sourceModels) {
    const translated = provider.translateModel(sourceModel, {
      existing(id) {
        return existing.get(`${id}.toml`)?.toml;
      },
      authored(id) {
        return existing.get(`${id}.toml`)?.authored;
      },