feat(ollama): Allow passthrough of other options (#7159)

libs/langchain-community/src/embeddings/ollama.ts

@@ -113,6 +113,9 @@ export class OllamaEmbeddings extends Embeddings {
       const snakeCasedOption = mapping[key as keyof CamelCasedRequestOptions];
       if (snakeCasedOption) {
         snakeCasedOptions[snakeCasedOption] = value;
+      } else {
+        // Just pass unknown options through
+        snakeCasedOptions[key] = value;
       }
     }
     return snakeCasedOptions;

libs/langchain-ollama/src/embeddings.ts

@@ -42,7 +42,7 @@ interface OllamaEmbeddingsParams extends EmbeddingsParams {
    * https://github.com/ollama/ollama/blob/main/docs/modelfile.md#valid-parameters-and-values
    * for details of the available parameters.
    */
-  requestOptions?: OllamaCamelCaseOptions;
+  requestOptions?: OllamaCamelCaseOptions & Partial<OllamaOptions>;
 }
 
 export class OllamaEmbeddings extends Embeddings {
@@ -121,6 +121,9 @@ export class OllamaEmbeddings extends Embeddings {
       const snakeCasedOption = mapping[key as keyof OllamaCamelCaseOptions];
       if (snakeCasedOption) {
         snakeCasedOptions[snakeCasedOption as keyof OllamaOptions] = value;
+      } else {
+        // Just pass unknown options through
+        snakeCasedOptions[key as keyof OllamaOptions] = value;
       }
     }
     return snakeCasedOptions;

libs/langchain-ollama/src/tests/embeddings.test.ts

@@ -0,0 +1,15 @@
+import { test, expect } from "@jest/globals";
+import { OllamaEmbeddings } from "../embeddings.js";
+
+test("Test OllamaEmbeddings allows passthrough of request options", async () => {
+  const embeddings = new OllamaEmbeddings({
+    requestOptions: {
+      num_ctx: 1234,
+      numPredict: 4321,
+    },
+  });
+  expect(embeddings.requestOptions).toEqual({
+    num_ctx: 1234,
+    num_predict: 4321,
+  });
+});