function registerNotificationHandlers()

in client/src/client.ts [311:353]
37 lines of code
4 McCabe index (conditional complexity)

function registerNotificationHandlers(client: lsp.LanguageClient): vscode.Disposable {
  const disposables: vscode.Disposable[] = [];
  disposables.push(client.onNotification(ProjectLoadingStart, () => {
    vscode.window.withProgress(
        {
          location: vscode.ProgressLocation.Window,
          title: 'Initializing Angular language features',
        },
        () => new Promise<void>((resolve) => {
          client.onNotification(ProjectLoadingFinish, resolve);
        }),
    );
  }));

  disposables.push(client.onNotification(SuggestStrictMode, async (params: SuggestStrictModeParams) => {
    const config = vscode.workspace.getConfiguration();
    if (config.get('angular.enable-strict-mode-prompt') === false) {
      return;
    }

    const openTsConfig = 'Open tsconfig.json';
    // Markdown is not generally supported in `showInformationMessage()`,
    // but links are supported. See
    // https://github.com/microsoft/vscode/issues/20595#issuecomment-281099832
    const doNotPromptAgain = 'Do not show again for this workspace';
    const selection = await vscode.window.showInformationMessage(
        'Some language features are not available. To access all features, enable ' +
            '[strictTemplates](https://angular.io/guide/angular-compiler-options#stricttemplates) in ' +
            '[angularCompilerOptions](https://angular.io/guide/angular-compiler-options).',
        openTsConfig,
        doNotPromptAgain,
    );
    if (selection === openTsConfig) {
      const document = await vscode.workspace.openTextDocument(params.configFilePath);
      vscode.window.showTextDocument(document);
    } else if (selection === doNotPromptAgain) {
      config.update(
          'angular.enable-strict-mode-prompt', false, vscode.ConfigurationTarget.Workspace);
    }
  }));

  return vscode.Disposable.from(...disposables);
}