Export to JS (#7)

* Export to JS

* Document

Author: kgbier

build.gradle.kts

@@ -12,6 +12,7 @@ kotlin {
     js(IR) {
         browser()
         nodejs()
+        binaries.executable()
     }
 
     sourceSets {
@@ -26,5 +27,12 @@ kotlin {
                 implementation(kotlin("reflect"))
             }
         }
+
+        all {
+            languageSettings.apply {
+                // https://kotlinlang.org/docs/js-to-kotlin-interop.html#jsexport-annotation
+                optIn("kotlin.js.ExperimentalJsExport")
+            }
+        }
     }
 }