Typescript all the parser things

app/imports/parser/toPrimitiveOrString.ts

@@ -0,0 +1,11 @@
+import ParseNode from '/imports/parser/parseTree/ParseNode';
+import { ConstantValueType } from '/imports/parser/parseTree/constant';
+import toString from './toString';
+
+
+export default function toPrimitiveOrString(node: ParseNode): ConstantValueType {
+  if (!node) return '';
+  if (node.parseType === 'constant') return node.value;
+  if (node.parseType === 'error') return undefined;
+  return toString(node);
+}