Implement string, number literal and completion record

src/throwUnknownNode.ts

@@ -0,0 +1,12 @@
+import { Node } from './acorn-helpers/types';
+
+class NotImplementedError extends TypeError {}
+
+export function throwUnknownNode(node: Node) {
+  throw new NotImplementedError(
+    `Unknown type: ${node.type} with text "${node.sourceFile?.slice(
+      node.start,
+      node.end
+    )}"`
+  );
+}