It lets us read the file line by line. Use Plain JavaScript to Read a Local File Line by Line in JavaScript Use Node.js readline Module to Read a Local File in JavaScript Use the line-reader Module in ...

Sure, we all have some processor we can write hex code for in our head ... check out [mgechev’s] language that resides in 25 lines of Javascript. The GitHub page bills it as a tiny compiler ...

but you can also use it to see values of variables in your code, which is helpful for debugging. Note how the line ends with a semi-colon. It is common practice in JavaScript to end your code lines ...