How to invoke function with arrow formed

Question

I'm trying to invoke this function, in /file-name.js

'use strict';
exports.handler = (event, context, callback) => {       
    console.log('INFO: Hello World!!');
};

And this is how i am invoking it from /test/tester.js

var myFunc = require('../file-name.js');
myFunc(event, context, callback);

But i get this error:

TypeError: myFunc is not a function

PS: event, context and callback parameters was defined and are ok. PS2: i can't change file-name.js. PS3: Finally work like this (thanks to @ankit31894):

var myFunc = require('../file-name.js');
myFunc.handler(event, context, callback)

You dont have to edit the question to reflect how problem was solved, simply accepting the working answer will suffice — bugwheels94, Nov 20 '16 at 22:38
@ankit31894, i only want to put all code lines together, for futher reference. And yes, i will accept your answer ;) — Vladimir Venegas, Nov 20 '16 at 22:42

score 2 · Accepted Answer · edited May 23 '17 at 12:13

It has nothing to do with arrow function. Do

myFunc.handler(event, context, callback);

Because you have exported an object which has a property called handler which in turn is your function.

In order to call function in the way you are calling you will have to export the function in /file-name.js

'use strict';
module.exports = (event, context, callback) => {       
    console.log('INFO: Hello World!!');
};

Read difference between exports and module.exports in nodejs

How to invoke function with arrow formed

1 Answers1