SyntaxError: Unexpected Identifier when using discord-webhooks / javascript

Question

I am attempting to create a simple javascript to serve as a webhook for Discord. I have removed the URL.

const DiscordWebhook = require("discord-webhooks");
let myWebhook = new DiscordWebhook("removedtopostonstackexchange")
myWebhook.on("ready", () => {
myWebhook.execute({
content:"Hello from a webhook",
username:"Mr Webhook",
avatar_url:"https://example.com/image.png"});});
myWebhook.on("error", (error) => {console.warn(error);});

When I run this in runkit it works fine and a successful push is sent to the Discord channel, however, uploading to my linux server returns the following error:

[root@pikachu crash-watcher]# node test.js

/servers/crash-watcher/test.js:2
let myWebhook = new DiscordWebhook("removedtopostonstackexchange
    ^^^^^^^^^
SyntaxError: Unexpected identifier
    at Module._compile (module.js:439:25)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:945:3
[root@pikachu crash-watcher]#

Can anyone suggest what could be the problem?

Answer 1

The nodejs version installed on the server did not like using let.

Answer 2

Check your NodeJS version via node --version, it's probably out of date

Support for the let statement should be added in NodeJS 4

---

To upgrade your NodeJS version, run:

sudo npm cache clean -f
sudo npm install n -g
sudo n stable

Sidenote: For windows user, check out this stackoverflow thread