Nick: test suite init

apps/test-suite/utils/tokens.ts

@@ -0,0 +1,16 @@
+import { encoding_for_model } from "@dqbd/tiktoken";
+import { TiktokenModel } from "@dqbd/tiktoken";
+
+// This function calculates the number of tokens in a text string using GPT-3.5-turbo model
+export function numTokensFromString(message: string, model: string): number {
+  const encoder = encoding_for_model(model as TiktokenModel);
+
+  // Encode the message into tokens
+  const tokens = encoder.encode(message);
+
+  // Free the encoder resources after use
+  encoder.free();
+
+  // Return the number of tokens
+  return tokens.length;
+}