Tech Stack - guardian/support-frontend GitHub Wiki
In the following diagram it is possible to see the entire ecosystem of the support platform:

Inside support-frontend you will find the code which runs in the reader's browser and in the application server. Please bear in mind that support-frontend should not have external dependencies.
PayPal Payments
The following diagram shows the series of requests that take place for a One-Off PayPal payment:

The pieces that make up support-frontend are:
Frontend
- autoprefixer
- babel
- eslint
- jest
- preact
- redux
- flow
- sass
- Google tag manager and ophan for tracking
- raven (sentry)
Backend
- Scala
- Play
Tools
- npm registry
- npm scripts
- sbt
- webpack
- yarn