Sendgrid-nodejs: Kesalahan sintaks dalam contoh kode node.js sendgrid, selama waktu berjalan.

Ringkasan Masalah

Saya mendapatkan kesalahan Sintaks di mail.js ketika saya menyalin contoh kode sendgrid dan mencoba menjalankannya di server saya

Langkah-langkah untuk Reproduksi

1. npm instal @sendgrid/mail
2. variabel lingkungan yang diekspor SENDGRID_API_KEY di lingkungan bash saya
3. Menyalin kode sampel

const sgMail = require('@sendgrid/mail');
sgMail.setApiKey(process.env.SENDGRID_API_KEY);
const msg = {
  to: '[email protected]',
  from: '[email protected]',
  subject: 'Sending with SendGrid is Fun',
  text: 'and easy to do anywhere, even with Node.js',
  html: '<strong>and easy to do anywhere, even with Node.js</strong>',
};
sgMail.send(msg);

Langkah terakhir:
Jalankan kodenya

# node sendgrid.js
/root/scripts/node_modules/@sendgrid/mail/src/mail.js:6
const {
      ^

SyntaxError: Unexpected token {
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:373:25)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (/root/scripts/sendgrid.js:1:78)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)

Detail teknis:

# npm list |grep sendgrid
├─┬ @sendgrid/[email protected]
│ ├─┬ @sendgrid/[email protected]
│ │ ├── @sendgrid/[email protected] deduped
│ └─┬ @sendgrid/[email protected]
├─┬ [email protected]
│ └── [email protected]
npm ERR! extraneous: [email protected] /root/scripts/node_modules/jsprim/node_modules/assert-plus
npm ERR! extraneous: [email protected] /root/scripts/node_modules/verror/node_modules/assert-plus
npm ERR! extraneous: [email protected] /root/scripts/node_modules/dashdash/node_modules/assert-plus
npm ERR! extraneous: [email protected] /root/scripts/node_modules/getpass/node_modules/assert-plus
npm ERR! extraneous: [email protected] /root/scripts/node_modules/sshpk/node_modules/assert-plus

# npm -v 
5.3.0
# node -v
v4.8.4
# echo $SENDGRID_API_KEY
SG.jyr8dVjFTBO4MayuTAS_zA.7a9Qg_XXXXXX