Class LocalDevserver

packages/angular/cli/src/commands/mcp/devserver.ts:80–166

 * A local Angular development server managed by the MCP server.
 */
export class LocalDevserver implements Devserver {
  readonly host: Host;
  readonly port: number;
  readonly workspacePath: string;
  readonly project: string;

  private devserverProcess: ChildProcess | null = null;
  private serverLogs: string[] = [];
  private buildInProgress = false;
  private latestBuildLogStartIndex?: number = undefined;
  private latestBuildStatus: BuildStatus = 'unknown';

  constructor({
    host,
    port,
    workspacePath,
    project,
  }: {
    host: Host;
    port: number;
    workspacePath: string;
    project: string;
  }) {
    this.host = host;
    this.port = port;
    this.workspacePath = workspacePath;
    this.project = project;
  }

  start() {
    if (this.devserverProcess) {
      throw Error('Dev server already started.');
    }

    const args = ['serve'];
    if (this.project) {
      args.push(this.project);
    }

    args.push(`--port=${this.port}`);

    this.devserverProcess = this.host.startNgProcess(args, {
      stdio: 'pipe',
      cwd: this.workspacePath,
    });
    processStreamLines(this.devserverProcess.stdout, (line) => this.addLog(line));
    processStreamLines(this.devserverProcess.stderr, (line) => this.addLog(line));

    this.devserverProcess.on('close', () => {
      this.stop();
    });
    this.buildInProgress = true;
  }

  private addLog(log: string) {
    this.serverLogs.push(log);

    if (BUILD_START_MESSAGES.some((message) => log.startsWith(message))) {