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Development Environment

📋 Required packages

🚀 Environment setup

  1. Run yarn install
  2. Run yarn develop
  3. The site is running at http://127.0.0.1:8000 :)

Production build is done by gatsby build

Development rules 👮‍♂

  1. We work on feature branches. The name of the branch should be meaningful and indicate the changes you made.
  2. Once the work is finished, you should create a pull request on github. Target branch should be set to gatsby.
  3. When a pull request is merged, it will be deployed automatically to the production website.

patch-package

We're using gatsbyjs/gatsby#34613 (reply in thread) be careful when upgrading gatsby.

SimpleMdx

There's a custom SimpleMdx type defined that allows using MDX inside frontmatter fields.

It only handles simple html conversion. Probably not even styling. See Job.tsx and links_more_about_us for an example.

Infrastructure

The infrastructure is deployed manually from infrastructure aws-cdk app.

Cookie consent rendering optimisation

Disabled until further notice

The optimization apparently has caused a change in how GA4 and UA categorizes source traffic. The Direct & Organic channels were flipped. Most of the traffic appeared as if it was Direct.

The code is in consent-vs-regular branch.

How it worked

After we introduced cookie consent prompt the performance of the page dropped significantly. The Lighthouse reports indicated that it is because late LCP triggered by showing Cookie Consent.

In order to alleviate the issue during build we're publishing 2 versions of all index.html files. The default one, renders cookie consent lazily after component mounts. The second one has cookie consent rendered in html.

The rendering is controlled via COOKIE_CONSENT_EAGER_RENDER_ENABLED environment variable.

After the cookie consent enabled html version is rendered we copy it to S3 bucket with a different name. All index.html files are copied to S3 as index_showCookieConsent_.html. Finally, there's a consent-vs-regular-origin-request.ts CloudFront Function called on viewer request event. The function checks if the request includes CookieConsent cookie and if not changes the request to show index_showCookieConsent_.html.

Downsides

The above approach improves performance significantly. However, it requires us to perform 2 builds of the page. Perhaps there's a better approach...

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