Function optionalColumn

apps/local/src/db/v1-v2-migration.ts:152–153

(columns: ReadonlySet<string>, table: string, column: string)

  );

const optionalColumn = (columns: ReadonlySet<string>, table: string, column: string): string =>
  columns.has(column) ? `${quoteIdent(table)}.${quoteIdent(column)}` : "NULL";

const isLocalV1Database = async (client: Client): Promise<boolean> => {
  if (!(await tableExists(client, "source"))) return false;