Ng Generate Resolver

The ng generate resolver command is a utility provided by the Angular CLI to generate a resolver class for a given route in your Angular application.

Usage

To generate a resolver for a specific route, run the following command in your Angular project:

ng generate resolver <resolver-name> [--route <route-name>] [--module <module-name>] [--skipTests]

• <resolver-name>: The name of the resolver.
• --route <route-name>: The route path for which the resolver is being generated.
• --module <module-name>: The name of the module in which the resolver is being generated.
• --skipTests: Flag to skip generating the spec file for the resolver.

What is a Resolver?

A resolver is a service that is used to pre-fetch data for a specific route to a component. This is done to ensure the component has all of the necessary data before it's rendered.

Why use a Resolver?

Using a resolver can improve the user experience of your application by reducing the latency between the time a user clicks a link and the time the page is rendered.

How does it Work?

When a user clicks a link to navigate to a route that has a resolver, the resolver service is called before the component is rendered. The service fetches the required data and resolves a Promise containing the data. This Promise is then passed to the component as an input parameter when it is rendered.

Conclusion

In summary, the ng generate resolver command is a useful utility provided by the Angular CLI for generating resolvers that can pre-fetch data for a specific route in your Angular application. By using resolvers, you can significantly improve the user experience and performance of your application.