Require in nodejs instance a new class

Question

Require in nodejs instance a new class

Navigation

#1 by (0 votes)
#2 by (0 votes)

2

I need to call a method of a class which should not be instantiated again, since it causes an error.

In main.js:

var telegram = require('./telegram.js');
telegram.hello();

In telegram.js

const bot = new TelegramBot(token, {polling: true});

function hello(req) {
        console.log("hello!!");
}

module.exports.hello = hello;

The error is to instantiate the telegram bot twice:

Conflict: terminated by other long poll or webhook

javascript nodejs

asked by Pablo Cegarra 05.08.2017 в 10:37

source

2 answers

JSON in android (Value of type java.lang.String can not be converted to JSONObject) register in groups / javascript arrangements [closed]

score 0 · Answer 1

The easiest way I see is to create a global variable to cache your TelegramBot in your telegram.js

let bot = null;
if (global.cachedModule) {
    bot = global.cachedModule;
} else {
    bot = new TelegramBot(token, {polling: true});
    global.cachedModule = bot;
}

function hello(req) {
        console.log("hello!!");
}

module.exports.hello = hello;

score 0 · Answer 2

Let's see, what you set as an example

const bot = new TelegramBot(token, {polling: true});

function hello(req) {
        console.log("hello!!");
}

module.exports.hello = hello;

It exports you the hello function and yet, bot is not being used.

If you want to create an instance of TelegramBot, add methods to it and export that instance, then:

const bot = new TelegramBot(token, {polling: true});

bot.algo = function(){}

module.exports = bot;

You have to export to the object, not the object's method.