Different Ways to implement read file in node (Async and nonAsync)

files.ts

const fs = require("fs");
const fsPromises = require("fs").promises;

async function main() {
  // Sync
  const fileBuff = fs.readFileSync("file.txt");
  const bArr = Uint8Array.from(fileBuff);

  // Async (EventLoop)
  const fileBuff2 = await fsPromises.readFile("file.txt");


  // Async (EventLoop) but reinventing the wheel
  const fileBuff3 = await readFileAsync("file.txt");

  // Async Conventional Way
  fs.readFile("file.txt", (err: any, data: Buffer) => {
    if (err) {
      console.error(err);
    } else {
      onFileReadSuccessfully(data);
    }
  });

}

function onFileReadSuccessfully(buff: Buffer){
  setState(Uint8Array.from(buff))
}


async function readFileAsync(path: String) {
  return new Promise<Buffer>((resolve, reject) => {
    fs.readFile(path, (err: any, data: Buffer) => {
      if (err) {
        reject(err);
      } else {
        resolve(data);
      }
    });
  });
}