function getServerOptions()

in client/src/client.ts [457:513]
43 lines of code
14 McCabe index (conditional complexity)

function getServerOptions(ctx: vscode.ExtensionContext, debug: boolean): lsp.NodeModule {
  // Environment variables for server process
  const prodEnv = {};
  const devEnv = {
    ...prodEnv,
    NG_DEBUG: true,
  };

  // Because the configuration is typed as "boolean" in package.json, vscode
  // will return false even when the value is not set. If value is false, then
  // we need to check if all projects support Ivy language service.
  const config = vscode.workspace.getConfiguration();
  let viewEngine: boolean = config.get('angular.view-engine') || !allProjectsSupportIvy();
  if (viewEngine && !allProjectsSupportVE()) {
    viewEngine = false;
    if (config.get('angular.view-engine')) {
      vscode.window.showErrorMessage(
          `The legacy View Engine option is enabled but the workspace contains a version 13 Angular project.` +
              ` Legacy View Engine will be disabled since support for it was dropped in v13.`,
      );
    } else if (!allProjectsSupportIvy() && !allProjectsSupportVE()) {
      vscode.window.showErrorMessage(
          `The workspace contains a project that does not support legacy View Engine (Angular v13+) and a project that does not support the new current runtime (v8 and below).` +
          `The extension will not work for the legacy project in this workspace.`);
    }
  }

  // Node module for the language server
  const args = constructArgs(ctx, viewEngine);
  const prodBundle = ctx.asAbsolutePath('server');
  const devBundle = ctx.asAbsolutePath(path.join('dist', 'server', 'server.js'));
  // VS Code Insider launches extensions in debug mode by default but users
  // install prod bundle so we have to check whether dev bundle exists.
  const latestServerModule = debug && fs.existsSync(devBundle) ? devBundle : prodBundle;
  const v12ServerModule = ctx.asAbsolutePath(
      path.join('v12_language_service', 'node_modules', '@angular', 'language-server'));
  const module = viewEngine ? v12ServerModule : latestServerModule;

  // Argv options for Node.js
  const prodExecArgv: string[] = [];
  const devExecArgv: string[] = [
    // do not lazily evaluate the code so all breakpoints are respected
    '--nolazy',
    // If debugging port is changed, update .vscode/launch.json as well
    '--inspect=6009',
  ];

  return {
    module,
    transport: lsp.TransportKind.ipc,
    args,
    options: {
      env: debug ? devEnv : prodEnv,
      execArgv: debug ? devExecArgv : prodExecArgv,
    },
  };
}