How to use Typescript Async/ await with promise in Node JS FS Module

For now I think there is no other way as to go with wrapper function. Something like this:

function WriteFile(fileName, data): Promise<void>
{
    return new Promise<void>((resolve, reject) =>
    {
        fs.writeFile(fileName, data, (err) => 
        {
            if (err)
            {
                reject(err);    
            }
            else
            {
                resolve();
            }
        });
    });        
}

async function Sample()
{
    await WriteFile("someFile.txt", "someData");
    console.log("WriteFile is finished");
}

There is some lengthy discussion here about promises in node.js: Every async function returns Promise

Since NodeJS 10.0.0 fsPromises module can be used to achieve this result.

import { promises as fsPromises } from 'fs';
await fsPromises.writeFile('file.txt', 'data')