How can I access variable values that are within a js file in my node console? How can I make that variable value available in my console?

For instance, let's say I have a file called file.js. This file only contains the following code:

```
const x = 10; 
const y = 5; 

```

How can I access the x and y values within my node console? For instance, let's say my node console is already open. How can I access these values so that I can run the following code in my node console...

```
> x + y

```

... and then be able to get a return value of 15?