Uncaught ReferenceError: _typeof is not defined

This error occurs when you try to use the _typeof function in your code, but the function is not defined. The _typeof function is used to determine the type of a variable in JavaScript.

To fix this error, make sure that you have included the definition of the _typeof function in your code. You can define the function yourself or use a library that provides the function.

Here is an example of how to define the _typeof function:

function _typeof(obj) {
return typeof obj;
}

Alternatively, you can use the typeof operator directly instead of using the _typeof function, for example:

if (typeof myVariable === 'string') {
// do something
}