Fix: Javascript node error logs (#14)

In some cases the error is a string, and when logging it will write "undefined" into the console instead of providing a useful error message.

packages/noodl-runtime/src/nodes/std-library/simplejavascript.js

@@ -1,4 +1,5 @@
 const JavascriptNodeParser = require('../../javascriptnodeparser');
+const { logJavaScriptNodeError } = require('../../utils');
 
 const SimpleJavascriptNode = {
   name: 'JavaScriptFunction',
@@ -139,11 +140,8 @@ const SimpleJavascriptNode = {
           JavascriptNodeParser.getComponentScopeForNode(this)
         ]);
       } catch (e) {
-        console.log(
-          'Error in JS node run code.',
-          Object.getPrototypeOf(e).constructor.name + ': ' + e.message,
-          e.stack
-        );
+        logJavaScriptNodeError(e);
+
         if (this.context.editorConnection && this.context.isWarningTypeEnabled('javascriptExecution')) {
           this.context.editorConnection.sendWarning(
             this.nodeScope.componentOwner.name,

packages/noodl-runtime/src/utils.js

@@ -12,6 +12,24 @@ function getAbsoluteUrl(_url) {
   return (Noodl.baseUrl || '/') + url;
 }
 
+/**
+ * Log an error thrown by the JavaScript nodes.
+ *
+ * @param {any} error 
+ */
+function logJavaScriptNodeError(error) {
+  if (typeof error === 'string') {
+    console.log('Error in JS node run code.', error);
+  } else {
+    console.log(
+      'Error in JS node run code.',
+      Object.getPrototypeOf(error).constructor.name + ': ' + error.message,
+      error.stack
+    );
+  }
+}
+
 module.exports = {
-  getAbsoluteUrl
+  getAbsoluteUrl,
+  logJavaScriptNodeError
 };