A couple of question regarding `js("...")` code b...

# javascript

[Ugi]

A couple of question regarding js("...") code block. In pre 1.4 I had this code to determine if I'm running on node or in browser (it's inside an actual implementation of expected method in multi platform project)

val runningOnNode = js(
            "if (typeof window === 'undefined') {\n" +
                    "             true;\n" +
                    "    } else {\n" +
                    "            false;\n" +
                    "    }"
        )

Since switching to 1.4 and enabling IR, that block started returning undefined where it was previously a boolean true or false. I worked around this with this:

val runningOnNode = js(
            "var isNode = false;\n" +
                    "if (typeof window === 'undefined') {\n" +
                    "             isNode = true;\n" +
                    "    } else {\n" +
                    "            isNode = false;\n" +
                    "    }\n" +
                    "return isNode;"
        )

So I have two questions, and please consider that my JS knowledge is very limited:
1. Is this expected change that came with 1.4 or is it a bug?
2. Am I using js(...) code block in a way that it was not meant to be used, and causing the issue myself?

[turansky]

val isNode:Boolean = jsTypeOf(window) == "undefined"

[Ugi]

That looks clean, thanks!

[gildor]

You also can use
"""some multiline code""" to avoid all those \n and concatenations

[gildor]

I would also report this case to kotl.in/issue, even if it’s expected change, would be nice if it would be documented for js function