Aws lambda function with node returns "callback is not a function "

Question

One of my friend has this issue, we are hosting the api using lite-server, and access the api on browser, it says callback is not a function.

   'use strict';
    (function () {
         var StoreAPI = require('Store');
         module.exports = {            
             getBooks: function (event, context,callback) {
                 var books;
                    StoreAPI.getAll('books', function(err,data){                 
                     console.log(data);    
                     callback({
                         path: data.path, 
                         error: false, 
                         errorCode: 0, 
                         body: { 
                         books : data    
                         }           
                     });           
                 });
            }
        };
    } ());

url goes as:

http://localhost:3000/getBooks

TimoStaudinger · Accepted Answer · 2017-01-31 19:54:59Z

2

This issue is likely caused by the code that invokes getBooks.

After the API call is completed, you try to call the function passed in as parameter callback, but as the error message says, what you are trying to call is not a function. To resolve this, ensure that the invoking code actually passes a function as callback.

answered Jan 31, 2017 at 19:54

TimoStaudinger

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1 Comment

Mark B Over a year ago

@Sajeetharan you can't do that "in a browser url". Perhaps you need to include more information in your question about what you are doing and what you are trying to achieve.

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