[abrahamguo]

parsers and printers are typed as Record<string, …>, so with noUncheckedIndexedAccess enabled, parsers.postgresql and printers["sql-cst"] are possibly undefined. Reusing or wrapping one of them then needs a non-null assertion:

import { parsers, printers } from "prettier-plugin-sql-cst";

const postgresqlParser = parsers.postgresql!;
const sqlPrinter = printers["sql-cst"]!;

This narrows the keys to the ones the plugin defines: DialectName for parsers and "sql-cst" for printers. The value types stay the same, and dist/index.js is unchanged.

[nene]

Thanks!