Google Apps Script Javascript Standard Support

Simple question: Can anyone point to a resource or knows anything about which standard of Javascript is supported in Google Apps Script?

I assume naturally that ES5 is fully supported, but what about ES6 (and even 7)?

Note: I mean the built-in code editor, which will appear if you open a Spreadsheet (for example), and click Tools > Script editor...

Tools > Script editor...

Anyone who would know the answer is more likely to see your question and answer it at the Apps Script Group - LINK I don't know of any official documentation for this. Issues related to this have been discussed in the Apps Script group, for example: let and const are part of es6 specification, and have not been implemented in the Apps Script js engine. (As far as I know, at this moment in time) Whether Apps Script server side code supports something is probably just trial and error.
– Sandy Good
Jun 11 '16 at 21:43

Thanks @SandyGood - I'll transfer the question.
– Selfish
Jun 11 '16 at 21:44

Possible duplicate of Which Edition of ECMA-262 Does Google Apps Script Support?
– Rubén
Jun 12 '16 at 1:11

const is valid in Apps Script btw, but let is (currently) not
– tehhowch
Aug 16 '18 at 14:09

const

let

3 Answers
3

According to the docs Apps Script is based on JavaScript 1.6.

This table explains the correlation to the ES standards.

Thanks! Oddly searches didn't lead to this page. Just what I was looking for. :)
– Selfish
Jun 13 '16 at 7:38

Playing with Google Sheets custom functions right now It doesn't like let but it does like var. Apparently const is ok. But 1.6 has let, const, etc. Oh,well.
– Paul
Apr 23 '18 at 4:32

let

var

const

@Paul thanks for the update. A lot has changed since summer '16. :)
– Selfish
Aug 20 '18 at 11:15

The Mozilla page says 1.6 corresponds to "ECMA-262 Edition 3". So that is earlier than ES5?
– Dustin Michels
Nov 14 '18 at 19:05

In the native editor it appears you are limited to an earlier version of JS (~ES5).

There is an official tool called "Clasp" though, which lets you write typescript (.ts) files with ES6+ syntax and then compile & upload your files to Drive with clasp push --watch.

.ts

clasp push --watch

Alternatively, you can use Webpack in your local setup as detailed in this answer.

My guess is AngluarJS is since it was made by a google developer.

I didn't quite get that. AngularJS is not a standard of JS, and isn't used in Apps Script. I wasn't asking which framework was Google Drive implemented in, if this is what you intended.
– Selfish
Jun 11 '16 at 21:09

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