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println is not console.log in Scala.js

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Scala.jsのprintlnconsole.logではなくラップされたもので、toStringが呼ばれてしまう。

val obj = js.Dynamic.literal(xxxx = 1)
println(obj)                        // => [object Object]
js.Dynamic.global.console.log(obj)  // => { xxxx: 1 }

おまけ

js.Objectを出力するのにはconsole.logが適切そうだけど、case classを出力したい場合はprintlnを使うほうが便利。

case class Hoge(xxxx: Int)
val obj = Hoge(1)
println(obj)                                 // => Hoge(1)
js.Dynamic.global.console.log(obj.toString)  // => Hoge(1)

case classは何らかの方法でjs側で扱えるものに変換しなけれぼconsole.logで出力することはできない。js側でObjectとしてそのまま使うことはできない。

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