What could cause error: “type”“error.SuiteScriptModuleLoaderError”,“name”“UNEXPECTED_ERROR”,“message”:“syntax error”, when changing user event script version to 2.1 and changing callback function passed to define from older function () definition to arrow function?

AI generated answer (using internal Slack threads):

The error

error.SuiteScriptModuleLoaderError

with

UNEXPECTED_ERROR

and

syntax error

message is typically caused by a syntax error in your SuiteScript code. In your case, it seems like you are trying to use an arrow function in your SuiteScript 2.1 user event script. However, it's important to note that as of the current NetSuite version, arrow functions are not supported in SuiteScript 2.1. This is likely the cause of the error you're seeing. Arrow functions are a feature of ECMAScript 6 (ES6), and while SuiteScript 2.1 supports many ES6 features, it does not support all of them, including arrow functions. In SuiteScript 2.1, you should use the

function

keyword to define your functions, rather than using arrow functions. For example, instead of writing

const myFunction = () => {...}

, you should write

function myFunction() {...}

. Here's an example of how you might define a callback function in SuiteScript 2.1:

javascript
define(['N/error', 'N/query'], function (error, query) {
    function myCallbackFunction() {
        // Your code here
    }

    return {
        myCallbackFunction: myCallbackFunction
    };
});

Remember to always check your syntax and ensure it is compatible with the version of SuiteScript you are using to avoid such errors. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******