angular-cli/packages/@angular/cli/commands/serve.ts

import { ArchitectCommand, ArchitectCommandOptions } from '../models/architect-command';
import { CommandScope, Option } from '../models/command';
import { Version } from '../upgrade/version';


export default class ServeCommand extends ArchitectCommand {
  public readonly name = 'serve';
  public readonly target = 'serve';
  public readonly description = 'Builds and serves your app, rebuilding on file changes.';
  public static aliases = ['s'];
  public readonly scope = CommandScope.inProject;
  public readonly options: Option[] = [
    this.prodOption,
    this.configurationOption,
  ];

  public validate(_options: ArchitectCommandOptions) {
    // Check Angular and TypeScript versions.
    Version.assertCompatibleAngularVersion(this.project.root);
    Version.assertTypescriptVersion(this.project.root);
    return true;
  }

  public async run(options: ArchitectCommandOptions) {
    return this.runArchitectTarget(options);
  }
}