​Environment Variables

Zudoku is built on top of Vite and uses their approach for managing environment variables.

In Zudoku, environment variables that are prefixed with ZUDOKU_PUBLIC_ are available in your application.

​Local Env Files

When developing locally, you can create a .env file in the root of your project and add environment-specific variables. See the Vite documentation for more information on supported files.

Here is an example of a .env.local file:

PUBLIC_PAGE_TITLE=My Page Title

You can access this variable in your application like this:

const pageTitle = import.meta.env.PUBLIC_PAGE_TITLE;

​Configuration Files

Environment variables can also be used in your configuration files. When referencing environment variables in your configuration files, you can use process.env directly.

import type { ZudokuConfig } from "zudoku";

const config: ZudokuConfig = {
  authentication: {
    type: "auth0",
    clientId: process.env.ZUDOKU_PUBLIC_AUTH_CLIENT_ID,
    domain: process.env.ZUDOKU_PUBLIC_AUTH_DOMAIN,
  },
};

​React Components

If you need to access environment variables inside a custom react component, you can access them via import.meta.env. Public environment variables are inlined during the build process.

import React from "react";

export const MyComponent = () => {
  return <h1>{import.meta.env.PUBLIC_PAGE_TITLE}</h1>;
};

​IntelliSense for TypeScript

By default, Zudoku provides type definitions for import.meta.env in zudoku/client.d.ts. While you can define more custom env variables in .env.[mode] files, you may want to get TypeScript IntelliSense for user-defined env variables that are prefixed with PUBLIC_.

To achieve this, you can create an zudoku-env.d.ts in src directory, then augment ImportMetaEnv like this:

/// <reference types="zudoku/client" />

interface ImportMetaEnv {
  readonly PUBLIC_APP_TITLE: string;
  // more env variables...
}

interface ImportMeta {
  readonly env: ImportMetaEnv;
}