Prisma

does any have a view on Typescript vs JS ES6 for the Graphcool serverless functions? I've seen many of the official templates are in TS

There's a thread on the forum with no answers: <https://www.graph.cool/forum/t/why-use-typescript-for-graphcool-framework-examples/1395>

<@U67SJHPEH> You can use ES6 and it's no problem. I've already been using across most of my functions

Just curious as to why the templates are now TS

oh okay. yeah me too. thinking about it makes sense though because the type checking makes them more robust

<https://blog.appdynamics.com/engineering/the-benefits-of-migrating-from-javascript-to-typescript/>

I wanted to know if graphcool considers the use of TypeScript to be best practise

The answer to that question is mostly a matter of taste. You can use anything that transpiles to JS. Typescript, Coffeescript, Clojure, Reason, etc. etc. etc.

You can also deploy your own functions (for example to AWS) and get Python support.

<@U5P82S230> Does you know about [TypeScript] Checking event.context.auth when you’re also defining EventData? <https://www.graph.cool/forum/t/typescript-checking-event-context-auth-when-youre-also-defining-eventdata/1878>

It's my first day using TS for my gc funcs

Check out <https://github.com/graphcool/graphcool-lib/blob/master/src/types.ts>

That contains all the types you need for `event`

Basically, if you use `FunctionEvent&lt;EventData&gt;` you already have a strongly typed context because of `FunctionEvent`

So Context is already defined because EventData extends FunctionEvent?

<@U5P82S230> thanks for that - super helpful :slightly_smiling_face:

I updated the forum post with your answer :slightly_smiling_face:

If you want to use JavaScript, simply compile your TypeScript and refactor