Lots of work on the parser including testing interface

app/imports/parser/parseTree/ErrorNode.js

@@ -0,0 +1,15 @@
+import ParseNode from '/imports/parser/parseTree/ParseNode.js';
+
+export default class ErrorNode extends ParseNode {
+  constructor({node, error}) {
+		super();
+    this.node = node;
+    this.error = error;
+  }
+  compile(){
+    return this;
+  }
+  toString(){
+    return '###';
+  }
+}