What I'm trying to achieve is to create one module that contains multiple functions in it.

module.js:

module.exports = function(firstParam) { console.log("You did it"); },
module.exports = function(secondParam) { console.log("Yes you did it"); },
// This may contain more functions

main.js:

var foo = require('module.js')(firstParam);
var bar = require('module.js')(secondParam);

The problem I have is that the firstParam is an object type and the secondParam is a URL string, but when I have that it always complains that the type is wrong.

How can I declare multiple module.exports in this case?

1

18 Answers

You can do something like:

module.exports = { method: function() {}, otherMethod: function() {},
};

Or just:

exports.method = function() {};
exports.otherMethod = function() {};

Then in the calling script:

const myModule = require('./myModule.js');
const method = myModule.method;
const otherMethod = myModule.otherMethod;
// OR:
const {method, otherMethod} = require('./myModule.js');

3

To export multiple functions you can just list them like this:

module.exports = { function1, function2, function3
}

And then to access them in another file:

var myFunctions = require("./lib/file.js")

And then you can call each function by calling:

myFunctions.function1
myFunctions.function2
myFunctions.function3

2

in addition to @mash answer I recommend you to always do the following:

const method = () => { // your method logic
}
const otherMethod = () => { // your method logic
}
module.exports = { method, otherMethod, // anotherMethod
};

Note here:

• You can call method from otherMethod and you will need this a lot
• You can quickly hide a method as private when you need
• This is easier for most IDE's to understand and autocomplete your code ;)

• You can also use the same technique for import:

  const {otherMethod} = require('./myModule.js');

6

module.js:

const foo = function(<params>) { ... }
const bar = function(<params>) { ... }
//export modules
module.exports = { foo, bar
}

main.js:

// import modules
var { foo, bar } = require('module');
// pass your parameters
var f1 = foo(<params>);
var f2 = bar(<params>);

This is just for my reference as what I was trying to achieve can be accomplished by this.

In the module.js

We can do something like this

 module.exports = function ( firstArg, secondArg ) { function firstFunction ( ) { ... } function secondFunction ( ) { ... } function thirdFunction ( ) { ... } return { firstFunction: firstFunction, secondFunction: secondFunction, thirdFunction: thirdFunction }; }

In the main.js

var name = require('module')(firstArg, secondArg);

If the files are written using ES6 export, you can write:

module.exports = { ...require('./foo'), ...require('./bar'),
};

0

One way that you can do it is creating a new object in the module instead of replacing it.

for example:

var testone = function () { console.log('test one');
};
var testTwo = function () { console.log('test two');
};
module.exports.testOne = testOne;
module.exports.testTwo = testTwo;

and to call

var test = require('path_to_file').testOne:
testOne();

0

You can write a function that manually delegates between the other functions:

module.exports = function(arg) { if(arg instanceof String) { return doStringThing.apply(this, arguments); }else{ return doObjectThing.apply(this, arguments); }
};

1

There are multiple ways to do this, one way is mentioned below. Just assume you have .js file like this.

let add = function (a, b) { console.log(a + b);
};
let sub = function (a, b) { console.log(a - b);
};

You can export these functions using the following code snippet,

 module.exports.add = add; module.exports.sub = sub;

And you can use the exported functions using this code snippet,

var add = require('./counter').add;
var sub = require('./counter').sub;
add(1,2);
sub(1,2);

I know this is a late reply, but hope this helps!

use this

(function()
{ var exports = module.exports = {}; exports.yourMethod = function (success) { } exports.yourMethod2 = function (success) { }
})();

also you can export it like this

const func1 = function (){some code here}
const func2 = function (){some code here}
exports.func1 = func1;
exports.func2 = func2;

or for anonymous functions like this

 const func1 = ()=>{some code here} const func2 = ()=>{some code here} exports.func1 = func1; exports.func2 = func2;

Two types module import and export.

type 1 (module.js):

// module like a webpack config
const development = { // ...
};
const production = { // ...
};
// export multi
module.exports = [development, production];
// export single
// module.exports = development;

type 1 (main.js):

// import module like a webpack config
const { development, production } = require("./path/to/module");

type 2 (module.js):

// module function no param
const module1 = () => { // ...
};
// module function with param
const module2 = (param1, param2) => { // ...
};
// export module
module.exports = { module1, module2
}

type 2 (main.js):

// import module function
const { module1, module2 } = require("./path/to/module");

How to use import module?

const importModule = { ...development, // ...production, // ...module1, ...module2("param1", "param2"),
};

1

Inside your node module you can export various functions such as:

module.exports.eat = eat;
function eat() { ....... return *something*;
};
module.exports.sleep = sleep;
function sleep() { ....... return *something*;
};

Note that you are not calling the functions while exporting them. Then while requiring the modules you can require as:-

const task = require(__dirname + "/task.js");
//task is the name of the file
let eat = task.eat();
let sleep = task.sleep();

module1.js:

var myFunctions = { myfunc1:function(){ }, myfunc2:function(){ }, myfunc3:function(){ },
}
module.exports=myFunctions;

main.js

var myModule = require('./module1');
myModule.myfunc1(); //calling myfunc1 from module
myModule.myfunc2(); //calling myfunc2 from module
myModule.myfunc3(); //calling myfunc3 from module

0

If you declare a class in module file instead of the simple object

File: UserModule.js

//User Module
class User { constructor(){ //enter code here } create(params){ //enter code here }
}
class UserInfo { constructor(){ //enter code here } getUser(userId){ //enter code here return user; }
}
// export multi
module.exports = [User, UserInfo];

Main File: index.js

// import module like
const { User, UserInfo } = require("./path/to/UserModule");
User.create(params);
UserInfo.getUser(userId);

You can use this approach too

module.exports.func1 = ...
module.exports.func2 = ...

or

exports.func1 = ...
exports.func2 = ...

Adding here for someone to help:

this code block will help adding multiple plugins into cypress index.js Plugins -> cypress-ntlm-auth and cypress env file selection

const ntlmAuth = require('cypress-ntlm-auth/dist/plugin');
const fs = require('fs-extra');
const path = require('path');
const getConfigurationByFile = async (config) => { const file = config.env.configFile || 'dev'; const pathToConfigFile = path.resolve( '../Cypress/cypress/', 'config', `${file}.json` ); console.log('pathToConfigFile' + pathToConfigFile); return fs.readJson(pathToConfigFile);
};
module.exports = async (on, config) => { config = await getConfigurationByFile(config); await ntlmAuth.initNtlmAuth(config); return config;
};

module.exports = (function () { 'use strict'; var foo = function () { return { public_method: function () {} }; }; var bar = function () { return { public_method: function () {} }; }; return { module_a: foo, module_b: bar };
}());

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