Yeoman，在撰写之前使用yosay

Question

我是Javascript的新手，对于我所看到的，我可能在这里遇到异步代码问题：

我有一个函数在我的主生成器中调用composewith。在该函数中调用composeWith之前，如果需要，我使用yosay（）。

我的问题是在任何composeWith之前调用所有yoSay函数。

这是我的代码：writing和_composeWith函数

async writing() {
this.log('Before subGenerator 1 ======================================');
if (this.answers.licence) {
  await this._ComposeWith(constants.license);
}
this.log('After subGenerator 1 ======================================');

this.log('Before subGenerator 2 ======================================');
if (this.answers.dockerized) {
  await this._ComposeWith(constants.docker, {
    options: {
      packageManager: this.answers.packageManager,
      destinationRoot: this._generateRoot()
    }
  });
}
this.log('After subGenerator 2 ======================================');

}

    async _ComposeWith(configObject, args = undefined) {
       if (configObject.displayYeoman) {
         this.log('YEOMAN ======================================');
         //Have Yeoman asking the user some more questions
         this.log(
           yosay(
             `I will now ask you some questions about ${chalk.red(
               configObject.context
             )} !`
           )
         );
       }
       this.log('Calling composeWith ======================================');
       this.composeWith(require.resolve(configObject.generator), args);
    }

一切都按预期工作，除了在ComposeWith中打印yosay。

输出示例：

Before subGenerator 1 ======================================
YEOMAN ======================================

     _-----_     ╭──────────────────────────╮
    |       |    │  I will now ask you some │
    |--(o)--|    │    questions about the   │
   `---------´   │         license !        │
    ( _´U`_ )    ╰──────────────────────────╯
    /___A___\   /
     |  ~  |
   __'.___.'__
 ´   `  |° ´ Y `

Calling composeWith ======================================
After subGenerator 1 ======================================
Before subGenerator 2 ======================================
YEOMAN ======================================

     _-----_
    |       |    ╭──────────────────────────╮
    |--(o)--|    │  I will now ask you some │
   `---------´   │ questions about docker ! │
    ( _´U`_ )    ╰──────────────────────────╯
    /___A___\   /
     |  ~  |
   __'.___.'__
 ´   `  |° ´ Y `

Calling composeWith ======================================
After subGenerator 2 ======================================
? What's your name: John Doe
? Your email (optional): [email protected]
? Your website (optional):
? Which license do you want to use? Apache 2.0
? Which version of node will you run in the container?  8
? Whick package manager will you use?  npm
   create LICENSE
   create Dockerfile
   create .dockerignore

任何有关我的错误的帮助/解释将不胜感激！ :)

Answer 1

我认为你遇到了run loop的问题。

Yeoman按特定顺序安排某些任务，这适用于组合生成器。我推荐reading the documentation并看看这是否有帮助。

如果有一个发电机，顺序运行任务就没问题。但是，一旦你开始组合发电机，这还不够。

这就是Yeoman使用run循环的原因。

运行循环是具有优先级支持的队列系统。我们使用Grouped-queue模块来处理运行循环。

优先级在您的代码中定义为特殊原型方法名称。当方法名称与优先级名称相同时，运行循环将方法推入此特殊队列。如果方法名称与优先级不匹配，则将其推入默认组。