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All the file functions in Node.js are provided by the fs module. This module exposes a method called statSync(), which gets the file details synchronously.
By calling it passing a file path (relative to the file location, or absolute), it will return an object that contains the mtime property.
That is a Date object instance that contains the file last modified date.
const fs = require('fs')
const getFileUpdatedDate = (path) => {
const stats = fs.statSync(path)
return stats.mtime
}
Check out the JavaScript Date guide to find out more how to handle the Date object, if you need.