Previously, the master branch was only deployed to the
`next-angular-io-site` Firebase site, which is connected to the
`next.angular.io` domain. However, if the master major version was
higher than the stable major version (or the RC major version in case
there was an active RC), we also had to manually configure (via the
Firebase console and/or DNS records) the `v<X>.angular.io` domain to
redirect to `next.angular.io`. Then, once `<X>` became the new stable or
RC version, we had to manually remove the redirect (to let
`v<X>.angular.io` be redirected to `angular.io` or `rc.angular.io`).
This commit is part of a new process that reduces the manual steps as
follows (the steps below only apply when the master major version is
higher than the current stable and RC (if applicable)):
- A `v<X>-angular-io-site` Firebase site will be created as soon as the
version in the `master` branch's `package.json` is updated to a new
major.
- The `v<X>.angular.io` domain will be connected to that new Firebase
site.
- When deploying from the master branch, we will deploy to both
`next-angular-io-site` and `v<X>-angular-io-site`. In addition, the
deployment to `v<X>-angular-io-site` will update the Firebase config
file to redirect to `next.angular.io`.
- When the master version becomes the new stable/RC, we will start
deploying to `v<X>-angular-io-site` from the stable/RC branch, which
will update the Firebase config to stop redirecting to
`next.angular.io` and redirect to `(rc.)angular.io` instead (without
requiring changes in the Firebase console or DNS).
PR Close#43963
Previously, there was a `deploy-to-firebase` pre-deploy action for
configuring Firebase to redirect non-file requests to `angular.io`. This
is used for ensuring that `rc.angular.io` is correctly redirected to
`angular.io`, even when people have previously visited (and have a
ServiceWorker activated on) `rc.angular.io`.
This commit adds pre-deploy actions for configuring Firebase to redirect
a deployment to any of `angular.io`, `rc.angular.io` or
`next.angular.io` and also configure whether all requests or only
non-file requests will be redirected.
In a future commit, this will allow managing redirects for the `stable`,
`rc` and `next` deployments via the Firebase config file (without
requiring changes in the Firebase console or DNS).
PR Close#43963
Move some util functions from `deploy-to-firebase/index.mjs` to a
separate file (`deploy-to-firebase/utils.mjs`) to keep `index.mjs` small
and easier to maintain.
NOTE:
To make it easier to mock functions in tests, `utils.mjs` uses a default
export (instead of multiple named exports) and references local
functions through the default exported object.
PR Close#43963
