nx/docs/shared/guides/angular-rspack/handling-configurations.md
Jack Hsu 66eaf2fc74
docs(misc): remove /nx-api pages (#31453)
This PR removes the `/nx-api` pages from `nx-dev`. They are already
redirected from `/nx-api` to either `/technologies` or
`/reference/core-api` URLs.

e.g. `/nx-api/nx` goes to `/reference/core-api/nx` and `/nx-api/react`
goes to `/technologies/react/api`

**Changes**:
- Remove old `nx-api.json` from being generated in
`scripts/documentation/generators/generate-manifests.ts` -- this was
used to generate the sitemap
- Remove `pages/nx-api` from Next.js app since we don't need them
- Remove workaround from link checker
`scripts/documentation/internal-link-checker.ts` -- the angular
rspack/rsbuild and other workarounds are gone now that they are proper
docs in `map.json`
- Update Powerpack/Remote Cache reference docs to exclude API documents
(since they are duplicated in the Intro page) --
`nx-dev/models-document/src/lib/mappings.ts`
- All content in `docs` have been updated with new URL structure

**Note:** Redirects are already handled, and Claude Code was used to
verify the updated `docs/` URLs (see report below). The twelve 404s
links were updated by hand.

## Verification Report

https://gist.github.com/jaysoo/c7863fe7e091cb77929d1976165c357a
2025-06-04 16:57:01 -04:00

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Markdown

---
title: 'Handling Configurations'
description: 'Guide on how to handle configurations with Angular Rspack'
---
# Handling Configurations
Configurations are handled slightly differently compared to the Angular CLI. Rsbuild and Rspack use `mode` instead of configurations to handle different environments by default. This means that a different solution is needed to handle different build configurations you may have to match the behavior of Angular's configuration handling.
The [`createConfig`](/technologies/angular/angular-rspack/api) function helps you to handle this. It uses the `NGRS_CONFIG` environment variable to determine which configuration to use. The default configuration is `production`.
{% callout type="info" title="Roll your own" %}
You can handle configurations by yourself if you prefer, all you need is some manner of detecting the environment and then merging the options passed to `createConfig`.
{% /callout %}
## Using `createConfig` for configurations
The `createConfig` function takes two arguments, the first is the default options, and the second is an object of configurations. The configurations object is keyed by the name of the configuration, and the value is an object with the options and `rspackConfigOverrides | rsbuildConfigOverrides` to be used for that configuration.
```ts {% fileName="myapp/rspack.config.ts" %}
import { createConfig } from '@nx/angular-rspack';
export default createConfig(
{
options: {
browser: './src/main.ts',
server: './src/main.server.ts',
ssrEntry: './src/server.ts',
},
rspackConfigOverrides: {
mode: 'development',
},
},
{
production: {
options: {
fileReplacements: [
{
replace: './src/environments/environment.ts',
with: './src/environments/environment.prod.ts',
},
],
},
},
}
);
```
The above example shows how to handle the `production` configuration. The `options` are the same as the default options but with the `fileReplacements` property added, and the `rspackConfigOverrides` are the same as the default `rspackConfigOverrides`.
The `NGRS_CONFIG` environment variable is used to determine which configuration to use. If the environment variable is not set, the `production` configuration is used by default.
If a production configuration is not provided, the default configuration is used.
To run the build with the `production` configuration:
```bash
NGRS_CONFIG=production npx myapp build
```