Writing an effect

We successfully created our actions in the previous section. Now, we will make the effects that will be responsible for calling our external API.

Effects are not included in the @ngrx/store library; we will install a separate library that will allow us to use the functions for effects.

To install effects in our application, we must execute the following command:

ng add @ngrx/effects

The preceding command will perform the following steps:

1. Update the package.json file with the @ngrx/effects dependency.
2. Run npm install to install the added dependency.
3. Add EffectsModule.forRoot() to the imports array of your app.module.ts file.

Some flags are available that allow us to install @ngrx/effects with customizations; the following is the list of flags we can use:

• --path: Specifies the path to the module where you want to import EffectsModule.
• --project: The name of the project defined in angular.json.
• --skipTests: This creates...