249 lines
9.1 KiB
Markdown
249 lines
9.1 KiB
Markdown
# Creating a Remote
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In the concept of Module Federation a `remote` is the term given to an application that exposes modules that can be
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shared to and consumed by host applications.
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This is the key difference between a `remote` and `host`.
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- A `remote` exposes modules that can be consumed
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- A `host` consumes exposed modules
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**Nx** includes first-class support for helping you to scaffold a Module Federation Architecture for your React and
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Angular application(s).
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## Generating a Remote
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To generate a remote application in your workspace, run the following command:
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{% tabs %}
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{% tab label="React" %}
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```{% command="nx g @nx/react:remote myremote --directory=apps/react/myremote" %}
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> NX Generating @nx/react:remote
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CREATE apps/react/myremote/src/app/app.spec.tsx
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CREATE apps/react/myremote/src/assets/.gitkeep
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CREATE apps/react/myremote/src/environments/environment.prod.ts
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CREATE apps/react/myremote/src/environments/environment.ts
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CREATE apps/react/myremote/src/favicon.ico
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CREATE apps/react/myremote/src/index.html
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CREATE apps/react/myremote/tsconfig.app.json
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CREATE apps/react/myremote/webpack.config.ts
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CREATE apps/react/myremote/.babelrc
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CREATE apps/react/myremote/src/app/nx-welcome.tsx
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CREATE apps/react/myremote/src/app/app.module.css
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CREATE apps/react/myremote/src/app/app.tsx
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CREATE apps/react/myremote/src/styles.css
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CREATE apps/react/myremote/tsconfig.json
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CREATE apps/react/myremote/project.json
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CREATE apps/react/myremote/.eslintrc.json
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CREATE apps/react/myremote/jest.config.ts
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CREATE apps/react/myremote/tsconfig.spec.json
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CREATE apps/react/myremote/src/bootstrap.tsx
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CREATE apps/react/myremote/module-federation.config.ts
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CREATE apps/react/myremote/src/main.ts
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CREATE apps/react/myremote/src/remote-entry.ts
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CREATE apps/react/myremote/webpack.config.prod.ts
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UPDATE tsconfig.base.json
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```
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{% /tab %}
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{% tab label="Angular" %}
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```{% command="nx g @nx/angular:remote myremote --directory=apps/angular/myremote" %}
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> NX Generating @nx/angular:host
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CREATE apps/angular/myremote/project.json
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CREATE apps/angular/myremote/src/assets/.gitkeep
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CREATE apps/angular/myremote/src/favicon.ico
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CREATE apps/angular/myremote/src/index.html
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CREATE apps/angular/myremote/src/styles.css
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CREATE apps/angular/myremote/tsconfig.app.json
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CREATE apps/angular/myremote/tsconfig.editor.json
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CREATE apps/angular/myremote/tsconfig.json
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CREATE apps/angular/myremote/src/app/app.component.ts
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CREATE apps/angular/myremote/src/app/app.routes.ts
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CREATE apps/angular/myremote/src/main.ts
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CREATE apps/angular/myremote/.eslintrc.json
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CREATE apps/angular/myremote/jest.config.ts
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CREATE apps/angular/myremote/src/test-setup.ts
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CREATE apps/angular/myremote/tsconfig.spec.json
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CREATE apps/angular/myremote/src/app/remote-entry/entry.component.ts
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CREATE apps/angular/myremote/src/app/remote-entry/entry.routes.ts
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CREATE apps/angular/myremote/src/app/remote-entry/nx-welcome.component.ts
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CREATE apps/angular/myremote/module-federation.config.ts
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CREATE apps/angular/myremote/webpack.config.ts
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CREATE apps/angular/myremote/webpack.prod.config.ts
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CREATE apps/angular/myremote/src/bootstrap.ts
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UPDATE tsconfig.base.json
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```
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{% /tab %}
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{% /tabs %}
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After the `remote` application is generated, you can then update your host application's Module Federation Config File
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to specify that it can consume federated modules from this remote.
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{% tabs %}
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{% tab label="TypeScript Config File" %}
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```typescript {% fileName="apps/react/shell/module-federation.config.ts" %}
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import { ModuleFederationConfig } from '@nx/webpack';
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const config: ModuleFederationConfig = {
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name: 'shell',
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remotes: ['myremote'], // <-- add the name of your remote to the remotes array
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};
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export default config;
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```
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{% /tab %}
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{% tab label="JavaScript Config File" %}
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```typescript {% fileName="apps/react/shell/module-federation.config.js" %}
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module.exports = {
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name: 'shell',
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remotes: ['myremote'], // <-- add the name of your remote to the remotes array
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};
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```
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{% /tab %}
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{% /tabs %}
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{% callout type="note" title="Creating a Host" %}
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If you do not already have a host application in your workspace, look at
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the [Create a Host Recipe](/recipes/module-federation/create-a-host) for more information on how to achieve
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this.
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{% /callout %}
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### Let Nx add your Remote to your Host
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The `remote` generators also allow you to specify a `--host` option, which will allow the generator to add your remote
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to your host automatically. This can save you time by skipping the manual step above.
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The command would look like the following:
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{% tabs %}
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{% tab label="React" %}
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```{% command="nx g @nx/react:remote myremote --directory=apps/react/myremote --host=shell" %}
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> NX Generating @nx/react:remote
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CREATE apps/react/myremote/src/app/app.spec.tsx
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CREATE apps/react/myremote/src/assets/.gitkeep
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CREATE apps/react/myremote/src/environments/environment.prod.ts
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CREATE apps/react/myremote/src/environments/environment.ts
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CREATE apps/react/myremote/src/favicon.ico
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CREATE apps/react/myremote/src/index.html
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CREATE apps/react/myremote/tsconfig.app.json
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CREATE apps/react/myremote/webpack.config.ts
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CREATE apps/react/myremote/.babelrc
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CREATE apps/react/myremote/src/app/nx-welcome.tsx
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CREATE apps/react/myremote/src/app/app.module.css
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CREATE apps/react/myremote/src/app/app.tsx
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CREATE apps/react/myremote/src/styles.css
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CREATE apps/react/myremote/tsconfig.json
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CREATE apps/react/myremote/project.json
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CREATE apps/react/myremote/.eslintrc.json
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CREATE apps/react/myremote/jest.config.ts
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CREATE apps/react/myremote/tsconfig.spec.json
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CREATE apps/react/myremote/src/bootstrap.tsx
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CREATE apps/react/myremote/module-federation.config.ts
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CREATE apps/react/myremote/src/main.ts
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CREATE apps/react/myremote/src/remote-entry.ts
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CREATE apps/react/myremote/webpack.config.prod.ts
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UPDATE apps/react/shell/module-federation.config.ts
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UPDATE tsconfig.base.json
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```
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{% /tab %}
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{% tab label="Angular" %}
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```{% command="nx g @nx/angular:remote myremote --directory=apps/angular/myremote --host=shell" %}
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> NX Generating @nx/angular:host
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CREATE apps/angular/myremote/project.json
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CREATE apps/angular/myremote/src/assets/.gitkeep
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CREATE apps/angular/myremote/src/favicon.ico
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CREATE apps/angular/myremote/src/index.html
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CREATE apps/angular/myremote/src/styles.css
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CREATE apps/angular/myremote/tsconfig.app.json
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CREATE apps/angular/myremote/tsconfig.editor.json
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CREATE apps/angular/myremote/tsconfig.json
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CREATE apps/angular/myremote/src/app/app.component.ts
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CREATE apps/angular/myremote/src/app/app.routes.ts
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CREATE apps/angular/myremote/src/main.ts
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CREATE apps/angular/myremote/.eslintrc.json
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CREATE apps/angular/myremote/jest.config.ts
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CREATE apps/angular/myremote/src/test-setup.ts
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CREATE apps/angular/myremote/tsconfig.spec.json
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CREATE apps/angular/myremote/src/app/remote-entry/entry.component.ts
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CREATE apps/angular/myremote/src/app/remote-entry/entry.routes.ts
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CREATE apps/angular/myremote/src/app/remote-entry/nx-welcome.component.ts
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CREATE apps/angular/myremote/module-federation.config.ts
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CREATE apps/angular/myremote/webpack.config.ts
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CREATE apps/angular/myremote/webpack.prod.config.ts
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CREATE apps/angular/myremote/src/bootstrap.ts
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UPDATE apps/angular/shell/module-federation.config.ts
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UPDATE tsconfig.base.json
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```
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{% /tab %}
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{% /tabs %}
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## Building your Remote
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Your `remote` application acts like any other application in the context of Nx, and therefore building it as simple as
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running:
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```shell
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nx build myremote
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```
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## Serving your Remote
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The `remote` application is generated with two serve-like targets. These are:
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- serve
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- serve-static
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They can be run as usual with Nx:
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```shell
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nx serve myremote
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nx serve-static myremote
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```
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### Serve Target
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The `serve` target will use `webpack-dev-server` to serve your application, allowing for HMR and Live Reload. This is
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useful when you're working locally on that specific remote application.
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### Serve-Static Target
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The `serve-static` target will first build your application, storing the build artifact in the defined output directory
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_(usually `dist/path/to/remote`)_. It will then use `http-server` to serve the built application locally.
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This is less memory and CPU intensive than `webpack-dev-server` but it does not support HMR or Live Reload.
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The purpose of the `serve-static` target is to allow you to serve your `host` application, along with all of
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the `remote` applications it depends on without being too resource intensive.
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### Serving your Remote via your Host
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Generally, your `host` is the main application that you deploy and that users visit. It consumes modules from `remote`
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applications, but those `remote` applications are usually never visited directly by a user.
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Therefore, to support developing your application in a manner that replicates how users use the application, when
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serving a `host` application, Nx will serve all the dependent remotes automatically.
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By default, the dependent `remote` applications will be served via the `serve-static` command. However, if you are
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working on a specific remote application, you can tell Nx to serve the `host` application and any number of `remote`
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applications via the `webpack-dev-server` allowing those remote applications to take advantage of HMR and Live Reloading
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as you work on them.
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To do this, run the command:
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```shell
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nx serve host --devRemotes=myremote
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```
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This informs Nx to run the `serve` command of `myremote`, rather than the `serve-static` command.
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