Rename VITE_GTM_ID env var to VITE_GTAG_ID (#190)

Author: fvsch

.vitepress/config.ts

@@ -130,18 +130,18 @@ export default defineConfigWithTheme<ThemeConfig>({
 });
 
 function getAnalyticsTags(env: NodeJS.ProcessEnv): HeadConfig[] {
-  if (!env.VITE_GTM_ID) {
+  if (!env.VITE_GTAG_ID) {
     return [];
   }
   return [
     [
       'script',
-      { src: `https://www.googletagmanager.com/gtag/js?id=${env.VITE_GTM_ID}`, async: '' },
+      { src: `https://www.googletagmanager.com/gtag/js?id=${env.VITE_GTAG_ID}`, async: '' },
     ],
     [
       'script',
       {},
-      `function gtag(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],gtag('js',new Date),gtag('config','${env.VITE_GTM_ID}',{anonymize_ip:true})`,
+      `function gtag(){dataLayer.push(arguments)}window.dataLayer=window.dataLayer||[],gtag('js',new Date),gtag('config','${env.VITE_GTAG_ID}',{anonymize_ip:true})`,
     ],
   ];
 }

README.md

@@ -105,15 +105,15 @@ For production, the docs expect the following environment variables to be define
 
 - `VITE_ALGOLIA_ID`: Algolia `appId`.
 - `VITE_ALGOLIA_KEY`: Algolia `apiKey`.
-- `VITE_GTM_ID`: Google Tag Manager id.
+- `VITE_GTAG_ID`: Google Analytics id.
 
 They can be defined in CI server configuration, or in a `.env` file:
 
 ```sh
 # .env
 VITE_ALGOLIA_ID='******'
 VITE_ALGOLIA_KEY='******'
-VITE_GTM_ID='******'
+VITE_GTAG_ID='******'
 ```
 
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