next-validenv/example/env.mjs

Environment variable validation for Next.js

// @ts-check
import { validateEnvironmentVariables } from "next-validenv";
import { z } from "zod";

/**
 * Specify your server-side environment variables schema here.
 * This way you can ensure the app isn't built with invalid env vars.
 */
export const serverSchema = z.object({
  NODE_ENV: z.enum(["development", "test", "production"]),
});

/**
 * Specify your client-side environment variables schema here.
 * This way you can ensure the app isn't built with invalid env vars.
 * To expose them to the client, prefix them with `NEXT_PUBLIC_`.
 */
export const clientSchema = z.object({
  // NEXT_PUBLIC_CLIENT: z.string(),
});

const environmentVariables = validateEnvironmentVariables(
  clientSchema,
  serverSchema
);

export const env = environmentVariables;