Takze x sa konecne vypisuje. Vdaka. Len ono je to cele k nicomu ked to nejde odoslat ako json.

app.post('/', async (req, res) => {
  const x = await translate(req.body.query, req.body.to);
  console.log(x); // funguje
  res.json(x); // chyba
})

chyba:

UnhandledPromiseRejectionWarning: TypeError: Converting circular structure to JSON
    --> starting at object with constructor 'ClientRequest'
    |     property 'socket' -> object with constructor 'TLSSocket'
    --- property '_httpMessage' closes the circle...

skusal som to zapisat aj cez try a catch priamo v tom post route, no stale rovnaka chyba