npm install --save @postgresql-typed/tzswitcher

// pgt.config.ts (or postgresql-typed.config.ts)

import { defineConfig } from "@postgresql-typed/cli/config";

import "@postgresql-typed/tzswitcher/register";

export default defineConfig({
	core: {
		extensions: [
			"@postgresql-typed/tzswitcher",
		],
	},

	// TzSwitcher configuration (All options are optional)
	// By default, all the from/to objects are set to false (meaning they won't be switched)
	tzswitcher: {
		// timestamp/timestamptz/time/timetz columns
		timestamp: {
			from: "UTC", // The timezone that is stored in the database
			to: "Asia/Seoul", // The timezone that you want to switch to locally
		},
		timestamptz: false, // Disable timestamptz switching
		time: {
			from: "UTC",
			to: "Asia/Seoul",
		},
		timetz: false,
	}
});