Creating a jest test like: fails with however, node does define btoa as of node 16, and so the following: correctly outputs YWFh. How can I configure jest to get this test to pass? Clearly something is happening in the jest test runner to not execute in the current node environment, or otherwise is stripping specific built-ins, only I can’t
Tag: built-in
Where is low level code of Javascript standard built-in objects?
I’m looking for the way to get low level code of javascript built-in function. For example, there is an polyfill(I want like this form and I call this low level code in my way) in mdn site of ‘Array.prototype.indexOf()’ (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf) And I get to understand that it is kinda low level code of built-in method. Here is my question, where