Typesafe Envs made Simple

!NPM Version

This is the framework agnostic core package of t3-env.

> For full documentation, see https://env.t3.gg

Installation

``bash


npm

npm i @t3-oss/env-core

pnpm

pnpm add @t3-oss/env-core

bun

bun add @t3-oss/env-core

deno

deno add jsr:@t3-oss/env-core
`

Usage

> [!NOTE]
>
> You may use any Standard Schema compliant validator of your choice. This example uses Zod.
> See the documentation for more details.

`ts
// src/env.ts
import { createEnv } from "@t3-oss/env-core";
import { z } from "zod";

export const env = createEnv({
/*
* Serverside Environment variables, not available on the client.
* Will throw if you access these variables on the client.
*/
server: {
DATABASE_URL: z.url(),
OPEN_AI_API_KEY: z.string().min(1),
},
/*
* Environment variables available on the client (and server).
*
* 💡 You'll get type errors if these are not prefixed with PUBLIC_.
*/
clientPrefix: 'PUBLIC_',
client: {
PUBLIC_CLERK_PUBLISHABLE_KEY: z.string().min(1),
},
/*
* Specify what values should be validated by your schemas above.
*/
runtimeEnv: process.env,
});
``