MS Azure Function to call Google Translate

translate.js

const fetch = require('node-fetch');
const credentials = require('./credentials');

module.exports = async function(context, req) {
  if (req.query.searchTerm || (req.body && req.body.searchTerm)) {
    const searchTerm = req.query.searchTerm || 
          req.body.searchTerm;
    let url = `https://www.googleapis.com/language/translate/v2?key=${
      credentials.google
    }&source=en&target=fr&q=${searchTerm}`;
    await fetch(url)
      .then(res => res.json())
      .then(json => {
        context.res = {
          status: 200,
          headers: { 'Content-Type': 'application/json' },
          body: json
        };
        context.done();
      });
  } else {
    context.res = {
      status: 400,
      body: 'Please pass a name on the query string or in the request body'
    };
  }
  context.done();
};