script.js

 const File = require ('./models/file');
 const fs = require ('fs');
 const connectDB = require("./config/db");
 connectDB();

async function fetchData() {
    const pastDate = new Date ( Date.now() - (24 * 60 * 60 *1000) ); // 24 hours converted into milliseconds
    const files = await File.find({ createdAt: {$lt: pastDate}})

    if(files.length) {
        for(const file of files) {

            try{
                
                fs.unlinkSync(file.path);
                await file.remove();
                console.log(`successfully deleted ${file.filename}`);
            } catch(err){
                console.log(`Error while deleting file ${err}`);
            }

        }
        console.log('job done!')
    }
}

fetchData().then(() => {
    process.exit()
})