feat: Add support for WXT_ environment variable prefix (#1076)

docs/guide/essentials/config/environment-variables.md

@@ -15,14 +15,14 @@ And any environment variables listed inside them will be available at runtime:
 
 ```sh
 # .env
-VITE_API_KEY=...
+WXT_API_KEY=...
 ```
 
 ```ts
-await fetch(`/some-api?apiKey=${import.meta.env.VITE_API_KEY}`);
+await fetch(`/some-api?apiKey=${import.meta.env.WXT_API_KEY}`);
 ```
 
-Remember to prefix any environment variables with `VITE_`, otherwise they won't be available at runtime, as per [Vite's convention](https://vite.dev/guide/env-and-mode.html#env-files).
+Remember to prefix any environment variables with `WXT_` or `VITE_`, otherwise they won't be available at runtime, as per [Vite's convention](https://vite.dev/guide/env-and-mode.html#env-files).
 
 ## Built-in Environment Variables
 

docs/guide/essentials/config/runtime.md

@@ -44,8 +44,8 @@ declare module 'wxt/sandbox' {
 }
 
 export default defineAppConfig({
-  apiKey: import.meta.env.VITE_API_KEY,
-  skipWelcome: import.meta.env.VITE_SKIP_WELCOME === 'true',
+  apiKey: import.meta.env.WXT_API_KEY,
+  skipWelcome: import.meta.env.WXT_SKIP_WELCOME === 'true',
 });
 ```
 

packages/wxt/src/core/builders/vite/index.ts

@@ -44,6 +44,7 @@ export async function createViteBuilder(
     config.configFile = false;
     config.logLevel = 'warn';
     config.mode = wxtConfig.mode;
+    config.envPrefix ??= ['VITE_', 'WXT_'];
 
     config.build ??= {};
     config.publicDir = wxtConfig.publicDir;