Function symlink

test/parallel/test-trace-events-fs-async.js:250–257

()

}

function symlink() {
  const fs = require('fs');
  fs.writeFileSync('fs27.txt', '123', 'utf8');
  fs.symlink('fs27.txt', 'fs28.txt', () => {
    fs.unlinkSync('fs27.txt');
    fs.unlinkSync('fs28.txt');
  });
}

function readlink() {
  const fs = require('fs');