The expression doesn’t evaluate to a function, so it can’t be invoked.

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When you encounter the error message “the expression doesn’t evaluate to a function, so it can’t be invoked,” it means that you are trying to invoke a value that is not a function. In other words, you are treating something as a function when it is not a function.

Here is an example to help understand this error. Let’s say you have the following code:

    
      const x = 5;
      x();
    
  

In this example, the variable ‘x’ is assigned the value 5, which is not a function. When we try to invoke ‘x’ as a function by calling ‘x()’, the error “the expression doesn’t evaluate to a function” will occur since ‘x’ is not a function.

To fix this error, ensure that you are invoking a function and not a value that is not a function. Here’s an corrected example:

    
      const x = () => {
        console.log('Hello World!');
      };
      x();
    
  

In this updated example, ‘x’ is declared as a function using arrow function syntax. Now, when we call ‘x()’, it will successfully execute the function and print “Hello World!” to the console.

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