Add entrypoint and export on top eval level

langchain/scripts/create-entrypoints.js

@@ -163,6 +163,8 @@ const entrypoints = {
   "experimental/generative_agents": "experimental/generative_agents/index",
   "experimental/plan_and_execute": "experimental/plan_and_execute/index",
   client: "client/index",
+  // evaluation
+  evaluation: "evaluation/index",
 };
 
 // Entrypoints in this list will

langchain/src/evaluation/index.ts

@@ -0,0 +1,12 @@
+export {
+  RunEvaluatorChain,
+  RunEvaluatorInputMapper,
+  RunEvaluatorOutputParser,
+} from "./run_evaluators/base.js";
+
+export {
+  ChoicesOutputParser,
+  StringRunEvaluatorInputMapper,
+  getCriteriaEvaluator,
+  getQAEvaluator,
+} from "./run_evaluators/implementations.js";