doubleletters v1.0.0

To use this script, you would first need to have Node.js installed on your system.

Then you can create a new file and copy the script into it, save it with a .js extension, let's say "doubleFile.js"

Once you have the script, you can use it by requiring it in another script or in the Node.js REPL (Read-Eval-Print-Loop) by running:

const doubleFile = require('./doubleFile'); You can then call the "doubleFile" function and pass in the names of the input file and the output file as arguments:

doubleFile('inputFile.txt', 'outputFile.txt'); This will read the inputFile.txt, double the content of the input file, and write the new content to outputFile.txt.

You can also run the script directly from the command line by using the node command followed by the script name and the input and output file names as arguments:

node doubleFile.js inputFile.txt outputFile.txt Keep in mind that the input file should exist in the same directory where the script is located, otherwise the script will throw an error. And the output file will be created in the same directory where the script is located, if it does not exist.

The script also logs the errors or success message, so you can check for the status of the script, in case of any errors or success.