chore(gtag): add analytics tracking - #42
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shrinkray
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Aug 13, 2026
shrinkray
commented
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- add new Google Analytics tracking asset, set with env variable
- update docs
- add new tracking property - update docs
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Removed the redundant window.gtag = gtag; from src/layouts/BaseLayout.astro. The function gtag() declaration already puts it on window.
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Pull request overview
Adds optional Google Analytics 4 (gtag.js) tracking to the Astro site, controlled via a public environment variable, and documents how to enable it alongside existing Vercel Analytics.
Changes:
- Inject GA4
gtag.js+ manual pageview tracking inBaseLayoutwhenPUBLIC_GA_MEASUREMENT_IDis set. - Add
PUBLIC_GA_MEASUREMENT_IDtyping toImportMetaEnv. - Document the new optional GA4 configuration in
README.mdand.env.example.
Reviewed changes
Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| src/layouts/BaseLayout.astro | Conditionally loads GA4 tag and records page views on astro:page-load when configured. |
| src/env.d.ts | Adds TypeScript env typing for PUBLIC_GA_MEASUREMENT_ID. |
| README.md | Documents enabling GA4 via PUBLIC_GA_MEASUREMENT_ID and updates features list. |
| .env.example | Provides an example and notes for the optional GA4 env var. |
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- pushing via window.dataLayer explicitly
- prettier-plugin-astro was misparsing the define:vars script body. - build the gtag bootstrap as a string in the frontmatter
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