Quick script to change timestamps of files in given directory

change-files-timestamps.js

/*
 * This script changes the timestamps of a series of files in batch. The script will go through all files in
 * specified folder, ordering them by name. The first file will be stamped with given start date. The second one will
 * be stamped with start date plus 1 second, the third with start date plus 2 seconds, and so on.
 *
 * But why? I had a series of photos that I wanted to upload to the cloud and their timestamps did not represent the 
 * actual date when they were taken. The photos were all taken in the same day and I knew what day was that, so I just
 * needed a script to do it in batch for me. Also, files were sequentially named by the digital camera, and although I
 * didn't know the exact time of day each photo was taken, I could at least preserve the sequence, that's why I decided
 * to stamp each one second after the other, ordered by name.
 *
 * # How to use
 *
 * Considering you have Node.js already installed, install moment:
 *
 *     npm install moment
 *
 * Constants to set before running:
 *
 *     DIRECTORY
 *     START_DATE
 *
 * Attention: all files in DIRECTORY will have their timestamps changed!
 *
 */
const DIRECTORY = "/path/to/folder";
const START_DATE = "2001-01-01T00:00:00.000Z";

const fs = require("fs");
const path = require("path");
const moment = require("moment");

const date = moment(START_DATE);

// sort files by name (ascending)
const sortedFiles = Array.from(fs.readdirSync(DIRECTORY)).sort((a, b) => {
    const al = a.toLocaleLowerCase();
    const bl = b.toLocaleLowerCase();
    return al.localeCompare(bl);
});

// iterate through files changing their dates
for (const fileName of sortedFiles) {
    const fullName = path.join(DIRECTORY, fileName);

    // change file timestamp (both access and modified dates)
    const fd = fs.openSync(fullName, "r");
    const time = date.toDate();
    fs.futimesSync(fd, time, time);
    fs.closeSync(fd);

    console.info(`"${fileName}" done`);

    date.add(1, "second");
}