7 ms·

Using JavaScript Modules in ClojureScript

55 points by fnordsensei 10y ago

ethagnawl 10y ago
Is anyone else having trouble following along at home? I'm met with an error when running `node main.js`. > SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
- Arnavion 10y ago
  Try `node --use_strict main.js`
  - ethagnawl 10y ago
    Thanks - that worked! Do you know why that's necessary and why it wasn't mentioned in the tutorial?
    - swannodette 10y ago
      You probably need to install a more recent version of Node.js. That's one of the first things mentioned.
      - ethagnawl 10y ago
        Thanks, David. Upgrading to Node 7.4.0 allowed me to run `node main.js` without having to pass the flag. Granted, I was using an outdated version of Node, but perhaps it'd be helpful to add a >= version number to the Node dependency blurb (a la JDK 8). Either way, thanks for your continued efforts!
      - ethagnawl 10y ago
        One more thing: the `repl/repl*` function call's map argument is missing a closing `}`.
reilly3000 10y ago
I'm super stoked about this. Also, it sucks that I can't just name NPM packages in my project.cljs and move on. Because then I can play with NPM packages on my phone while I commute. Let's do this!
babbeloski 10y ago
Clojurescript is the most complete to JS languange. The build and developer tools are _ahead_ of Javascript. The language is great too, and it's pretty 1:1 with javascript, plus all the other goodies. It's not going to satisfy haskellers, but when you look at the big picture it wins over Elm (at the moment, I love Elm too)
tomerweller 10y ago
The fact that their example includes using cljsjs package for externs is troubling. For the meanwhile, to avoid worrying about extern files, I'd stick to using a separate build process for npm packages. Shameless self promotion: http://blob.tomerweller.com/reagent-import-react-components-from-npm http://blob.tomerweller.com/reagent-import-react-components-...
- apviitanen 10y ago
  Yeah, but without externs this breaks on advanced compilation, right? So, while using webpack to bundle npm deps is a good idea (that might also get unnecessary in the future with things like node module resolution landing in cljs compiler), you still need externs for the functions you're going to call from your cljs code. Luckily the latest cljs compiler will help you get those right.

55 points by fnordsensei 10y ago

Is anyone else having trouble following along at home? I'm met with an error when running `node main.js`. > SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode

Arnavion 10y ago
Try `node --use_strict main.js`
- ethagnawl 10y ago
  Thanks - that worked! Do you know why that's necessary and why it wasn't mentioned in the tutorial?
  - swannodette 10y ago
    You probably need to install a more recent version of Node.js. That's one of the first things mentioned.
    - ethagnawl 10y ago
      Thanks, David. Upgrading to Node 7.4.0 allowed me to run `node main.js` without having to pass the flag. Granted, I was using an outdated version of Node, but perhaps it'd be helpful to add a >= version number to the Node dependency blurb (a la JDK 8). Either way, thanks for your continued efforts!
    - ethagnawl 10y ago
      One more thing: the `repl/repl*` function call's map argument is missing a closing `}`.

reilly3000 10y ago

I'm super stoked about this. Also, it sucks that I can't just name NPM packages in my project.cljs and move on. Because then I can play with NPM packages on my phone while I commute. Let's do this!

babbeloski 10y ago

Clojurescript is the most complete to JS languange. The build and developer tools are _ahead_ of Javascript. The language is great too, and it's pretty 1:1 with javascript, plus all the other goodies. It's not going to satisfy haskellers, but when you look at the big picture it wins over Elm (at the moment, I love Elm too)

tomerweller 10y ago

The fact that their example includes using cljsjs package for externs is troubling. For the meanwhile, to avoid worrying about extern files, I'd stick to using a separate build process for npm packages. Shameless self promotion: http://blob.tomerweller.com/reagent-import-react-components-from-npm http://blob.tomerweller.com/reagent-import-react-components-...

apviitanen 10y ago
Yeah, but without externs this breaks on advanced compilation, right? So, while using webpack to bundle npm deps is a good idea (that might also get unnecessary in the future with things like node module resolution landing in cljs compiler), you still need externs for the functions you're going to call from your cljs code. Luckily the latest cljs compiler will help you get those right.