diff --git a/langchain-core/src/language_models/chat_models.ts b/langchain-core/src/language_models/chat_models.ts
index 390d4e767caf..cdf1752d94e8 100644
--- a/langchain-core/src/language_models/chat_models.ts
+++ b/langchain-core/src/language_models/chat_models.ts
@@ -430,7 +430,7 @@ export abstract class BaseChatModel<
 
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Generates chat based on the input messages.
    * @param messages An array of arrays of BaseMessage instances.
    * @param options The call options or an array of stop sequences.
diff --git a/langchain-core/src/language_models/llms.ts b/langchain-core/src/language_models/llms.ts
index 7c3cb9cd997c..b6db4dbaea2a 100644
--- a/langchain-core/src/language_models/llms.ts
+++ b/langchain-core/src/language_models/llms.ts
@@ -403,7 +403,7 @@ export abstract class BaseLLM<
 
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Run the LLM on the given prompts and input, handling caching.
    */
   async generate(
diff --git a/langchain-core/src/retrievers/index.ts b/langchain-core/src/retrievers/index.ts
index e18ed38caac6..91a97889376e 100644
--- a/langchain-core/src/retrievers/index.ts
+++ b/langchain-core/src/retrievers/index.ts
@@ -78,7 +78,7 @@ export abstract class BaseRetriever<
 
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Main method used to retrieve relevant documents. It takes a query
    * string and an optional configuration object, and returns a promise that
    * resolves to an array of `Document` objects. This method handles the
diff --git a/langchain-core/src/tools.ts b/langchain-core/src/tools.ts
index 19674049980f..1d6a67247187 100644
--- a/langchain-core/src/tools.ts
+++ b/langchain-core/src/tools.ts
@@ -44,7 +44,7 @@ export interface StructuredToolInterface<
 
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Calls the tool with the provided argument, configuration, and tags. It
    * parses the input according to the schema, handles any errors, and
    * manages callbacks.
@@ -108,7 +108,7 @@ export abstract class StructuredTool<
 
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Calls the tool with the provided argument, configuration, and tags. It
    * parses the input according to the schema, handles any errors, and
    * manages callbacks.
@@ -173,7 +173,7 @@ export abstract class StructuredTool<
 export interface ToolInterface extends StructuredToolInterface {
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Calls the tool with the provided argument and callbacks. It handles
    * string inputs specifically.
    * @param arg The input argument for the tool, which can be a string, undefined, or an input of the tool's schema.
@@ -200,7 +200,7 @@ export abstract class Tool extends StructuredTool {
 
   /**
    * @deprecated Use .invoke() instead. Will be removed in 0.2.0.
-   * 
+   *
    * Calls the tool with the provided argument and callbacks. It handles
    * string inputs specifically.
    * @param arg The input argument for the tool, which can be a string, undefined, or an input of the tool's schema.
diff --git a/langchain/src/agents/tests/json.test.ts b/langchain/src/agents/tests/json.test.ts
index ef161c97f76b..2e39e18697b0 100644
--- a/langchain/src/agents/tests/json.test.ts
+++ b/langchain/src/agents/tests/json.test.ts
@@ -109,11 +109,11 @@ test("JsonGetValueTool, paths containing escaped characters", async () => {
     "2"
   );
 
-  expect(await jsonGetValueTool.invoke("/paths/~0~1IDSGenericFXCrossRate")).toBe(
-    "3"
-  );
+  expect(
+    await jsonGetValueTool.invoke("/paths/~0~1IDSGenericFXCrossRate")
+  ).toBe("3");
 
-  expect(await jsonGetValueTool.invoke("/paths/~1~0IDSGenericFXCrossRate")).toBe(
-    "4"
-  );
+  expect(
+    await jsonGetValueTool.invoke("/paths/~1~0IDSGenericFXCrossRate")
+  ).toBe("4");
 });
diff --git a/langchain/src/chains/router/tests/multi_prompt.test.ts b/langchain/src/chains/router/tests/multi_prompt.test.ts
index 80d53467273e..2e1028c68172 100644
--- a/langchain/src/chains/router/tests/multi_prompt.test.ts
+++ b/langchain/src/chains/router/tests/multi_prompt.test.ts
@@ -66,7 +66,9 @@ test("Test MultiPromptChain", async () => {
     promptTemplates,
   });
 
-  const { text: result } = await multiPromptChain.invoke({ input: "Test input" });
+  const { text: result } = await multiPromptChain.invoke({
+    input: "Test input",
+  });
 
   expect(result).toEqual(`<from ${pickedPrompt}>`);
 });