create-app: Make new frontend system the default

The new frontend system is now the default template when creating a new
Backstage app. The previous `--next` flag has been replaced with a
`--legacy` flag that can be used to create an app using the old frontend
system instead.

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
This commit is contained in:
Patrik Oldsberg
2026-02-04 22:38:49 +01:00
parent 97411ebb0c
commit a6735c33b1
7 changed files with 19 additions and 14 deletions
@@ -20,10 +20,10 @@ The create-app CLI requires Node.js Active LTS Release, see the [prerequisites d
```sh
# The command bellow creates a Backstage App inside the current folder.
# The name of the app-folder is the name that was provided when prompted.
npx @backstage/create-app@latest --next
npx @backstage/create-app@latest
```
Using the `--next` flag will result in a Backstage app using the New Frontend System which will be further explained in the sections below.
This will create a Backstage app using the new frontend system which will be further explained in the sections below.
## The app instance
@@ -899,7 +899,7 @@ It's encouraged that once you switch over to using the new frontend system, that
This practice is also pretty important early on, as it's going to help you get familiar with the practices of the new frontend system.
When creating a new Backstage app with `create-app` and using the `--next` flag you'll automatically get these choices in the `yarn new` command, but if you want to bring these templates to an older app, you can add the following to your root `package.json`:
When creating a new Backstage app with `create-app` you'll automatically get these choices in the `yarn new` command, but if you want to bring these templates to an older app, you can add the following to your root `package.json`:
```json
{