How to invoke nodejs modules from scala.js?

Question

I'm trying to use scala.js + nw.js to write some application, and will use some node modules in scala.js. But I'm not sure how to do it. Say, there is module `fs` and I can write such code in Javascript: ``` var fs = require('fs'); fs.writeFile("/tmp/test", "Hey there!", function(err) { if(err) { console.log(err); } else { console.log("The file was saved!"); } }); ``` But how to do the same in scala.js from scratch?

Accepted Answer

Using `js.Dynamic` and `js.DynamicImplits` (see also a longer answer on the topic), you can transliterate your code in Scala.js:

```
import scala.scalajs.js
import js.Dynamic.{global => g}
import js.DynamicImplicits._

val fs = g.require("fs")
fs.writeFile("/tmp/test", "Hey there!", { (err: js.Dynamic) =>
  if (err)
    console.log(err)
  else
    console.log("The file was saved!")
})
```

You can find a longer source code using the Node.js `fs` module in Scala.js here: https://github.com/scala-js/scala-js/blob/v0.6.0/tools/js/src/main/scala/org/scalajs/core/tools/io/NodeVirtualFiles.scala

How to invoke nodejs modules from scala.js?

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