How to get filesize in NodeJS / TypeScript using Promisese

First, import stat from the NodeJS standard library:

import { stat } from "node:fs/promises";

// Async-await style:
const statResult = await stat("myfile.pdf");
const fileSizeInBytes = statResult.size;

stat("myfile.pdf").then(statResult => {
    const fileSizeInBytes = statResult.size;
    // TODO your code goes here
});