fs.appendFile()Add comments describing the functionality of the code found in index.js.
Refer to the documentation:
Node.js documentation on the fs module
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// We import the `fs` module to enable interaction with the file system
const fs = require('fs');
// appendFile() takes in 3 arguments: path, data, and callback function
fs.appendFile('log.txt', `${process.argv[2]}\n`, (err) =>
// Ternary operator takes in a condition followed by a question mark (?)
// then an expression to execute if the condition is truthy followed by a colon (:)
// and finally the expression to execute if the condition is falsy.
// This operator is frequently used as a shortcut for the if statement.
err ? console.error(err) : console.log('Commit logged!')
);