CLI

The CLI has a slightly different architecture than the other clients, which matches it's nature. CLI sessions are short lived and only execute a single task and then exit. This means that the CLI doesn't need to keep track of the memory state in the same way as the other clients.

Commands

Since the CLI is a command line interface, everything is structured around commands. Each command execute a specific task. Similar to Angular Components, Commands aims to be as lightweight as possible with most business logic being handled by services. This allows for code sharing between different commands, but also with the Angular presentation layer.

A basic command essentially only implements a single method, run. The Command classes are instantiated by the Program class.

export class ConfigCommand {
  // Dependencies are manually wired up in the Program class.
  constructor(private environmentService: EnvironmentService) {}

  async run(setting: string, value: string, options: program.OptionValues): Promise<Response> {
    // Set configuration
  }
}