成功执行vorpal命令后，会抛出错误

Question

我已经添加了以下的vorpal命令。

vorpal
    .command('connect [username] [password]')
    .description('Connect to server.')
    .action(function (args, callback) {
        setTimeout(function () {
            // deleting options key from args
            delete args.options;

        var context = domain.create();

        // error handling in domain
        context.on('error', errorHandler);

        // running the connect in domain
        context.run(function() {
            console.log("Arguments : ", args);
        });
    }, 0);
});

vorpal.delimiter('hdb$').show();

下面是堆栈跟踪，因为它只在vorpal库中生成。

Vorpal Prompt error: TypeError: Cannot read property 'setRawMode' of null
at ReadStream.setRawMode (tty.js:67:15)
at Interface._setRawMode (readline.js:177:23)
at new Interface (readline.js:137:10)
at Object.exports.createInterface (readline.js:39:10)
at Object.Interface.createInterface (/home/users/my-cli/node_modules/vorpal/node_modules/inquirer/node_modules/readline2/index.js:34:21)
at module.exports (/home/users/my-cli/node_modules/vorpal/node_modules/inquirer/lib/ui/baseUI.js:14:30)
at new module.exports (/home/users/my-cli/node_modules/vorpal/node_modules/inquirer/lib/ui/prompt.js:15:8)
at Object.promptModule as prompt
at Object.ui.prompt (/home/users/my-cli/node_modules/vorpal/lib/ui.js:171:25)
at EventEmitter.vorpal._prompt (/home/users/my-cli/node_modules/vorpal/lib/vorpal.js:528:15)
at EventEmitter. (/home/users/my-cli/node_modules/vorpal/lib/vorpal.js:542:12)
at callback (/home/users/my-cli/node_modules/vorpal/lib/vorpal.js:705:22)
at /home/users/my-cli/node_modules/vorpal/lib/vorpal.js:824:7
at EventEmitter._commandSetCallback (/home/users/my-cli/node_modules/vorpal/lib/session.js:455:5)
at EventEmitter.session.completeCommand (/home/users/my-cli/node_modules/vorpal/lib/session.js:519:12)
at onCompletion (/home/users/my-cli/node_modules/vorpal/lib/session.js:465:10)

如果我做错了什么，请让我知道。

Answer 1

我认为这可能只是因为您没有在命令完成后运行回调：

var vorpal = require('vorpal')();

vorpal
    .command('connect [username] [password]')
    .description('Connect to server.')
    .action(function (args, callback) {
      setTimeout(function(){
        // ... your logic
        callback();
      }, 0)
    });

vorpal.delimiter('hdb$').show();

上面的工作--从上面的逻辑开始，然后开始添加你的逻辑。如果它在回调时再次中断，则回溯到消除过程中，以找出导致问题的逻辑部分。