spas.md

Single Page Apps

Single Page Apps (aka SPAs) are pages that we render, that are not documents. For example the 404 page. These are rendered server-side but without a "doc".

To build these you run:

yarn tool spas

The SPAs are also built when running yarn build:prepare or yarn start.

Below we describe each SPA and this is a work in progress.

404 - Page not found

The React component is actually called <PageNotFound> and it generates a file called 404.html.

This page gets used by CloudFront as an "Error page" on the distribution behavior. That means that when a document can't be found in S3 as a regular key, it renders this instead.

To debug the 404 page, in local development you have two choices:

• http://localhost:5042/en-US/docs/Does/not/exist

• http://localhost:3000/en-US/404/Does/not/exist

The latter is used so you get hot-reloading as you're working on it. This will only work when you do local development on Yari.

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