Google Apps Script Throws Error When Trying To Call Object.assign()

Google Apps Script doesn't appear to recognize the function Object.assign(). When trying to use it I get the error: TypeError: Cannot find function assign in object function Objec

Solution 1:

Apps Script is NOT (as of this writing) a full implementation of the Ecmascript standard and currently does not natively support Object.assign(). However, you can leverage polyfills (when viable) that can add the needed functionality.

There is a polyfill available for Object.assign() on MDN at the following link:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign#Polyfill

Note: Rumor has it that Apps Script will be upgraded (at some point in the near future) to use Chrome's V8 engine thereby supporting EcmaScript 2017.