add copyright

Author: Tetraquark

javascript/src/commonMain/kotlin/dev/icerock/moko/javascript/JavaScriptEngine.kt

@@ -8,7 +8,8 @@ expect class JavaScriptEngine() {
     /**
      * Evaluate some [script] with external [context].
      *
-     * @throws JavaScriptEvaluationException in case of an error in the engine evaluation
+     * @throws JavaScriptEvaluationException in case of an error in the engine evaluation or if the
+     * engine has already been closed.
      */
     fun evaluate(context: Map<String, JsType>, script: String): JsType
 

javascript/src/commonMain/kotlin/dev/icerock/moko/javascript/JavaScriptEvaluationException.kt

@@ -1,6 +1,10 @@
+/*
+ * Copyright 2021 IceRock MAG Inc. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package dev.icerock.moko.javascript
 
 class JavaScriptEvaluationException(
-    throwable: Throwable?,
+    cause: Throwable? = null,
     message: String? = null
-) : Exception(message, throwable)
+) : Exception(message, cause)