NodeJS：引用多个模块中的相同变量

Question

在节点中，我创建了一个通过websockets连接到模块的模块实例。我用const slackbot = new SlackBot()这样做。我如何设置，以便我可以在几个不同的模块中引用相同的slackbot？每次我想在模块中调用slackbot时，最好的方法就是将模块函数传递给模块函数？这样做的

const slackbot = new SlackBot(); 

someModule.doThing(data, slackbot) 
.then((response) => { 
    otherModule.doAnotherThing(response, slackbot); 
}) 
.then((response) => { 
    someModule.wrapUp(response, slackbot); 
}); 

Answer 1

一种方法是

/** slacbot.js */ 
const slackbot = new SlackBot(); 

someModule.doThing(data, slackbot) 
.then((response) => { 
    otherModule.doAnotherThing(response, slackbot); 
}) 
.then((response) => { 
    someModule.wrapUp(response, slackbot); 
}); 

// getter  
var getSlackBot = function(){ 
    if(slackBot) return slackBot 
    else { 
    slackbot = new SlackBot(); 
    return slackbot; 
    } 
} 

module.exports.getSlackBot = getSlackBot; 


/** consumer.js **/ 
var slackBot = require('slackBot').getSlackBot();