Add ObjectId to conversion types

[MrSinaRJ]

Hi,
Thanks for the great tool you've developed. I use it daily and find it very easy to use.

Please add the ability to convert ObjectId (MongoDB time-based id) to timestamp and vice-versa. here is a code snippet suggestion for the convert:

// Convert ObjectId string to Date
function objectIdToDate(objectId) {
  const timestampHex = objectId.substring(0, 8); // first 4 bytes
  const timestamp = parseInt(timestampHex, 16);  // convert hex to int
  return new Date(timestamp * 1000);             // seconds to ms
}

// Convert Date to ObjectId string
function dateToObjectId(date) {
  const seconds = Math.floor(date.getTime() / 1000);
  const hexSeconds = seconds.toString(16).padStart(8, "0");
  return hexSeconds + "0000000000000000"; // pad to 24 hex chars
}

// Example usage:

console.log(objectIdToDate("6523a4c8c2b9b4a0f6e4a111")); 
// output: 2023-10-09T06:59:20.000Z

console.log(dateToObjectId(new Date(2025, 9, 12))); 
// output: 68eabe480000000000000000

It's not that easy, but it can make your tool more universal by adding this simple code.

Here is the breakdown of what the bytes in ObjectId means:

4 bytes: Unix timestamp (creation time, second precision)
5 bytes: random value (machine + process)
3 bytes: incrementing counter