Fix constructor type

langfuse/src/langfuse.ts

@@ -23,13 +23,8 @@ export class Langfuse extends LangfuseCore {
   private _storageCache: any;
   private _storageKey: string;
 
-  /**
-   * Creates a new Langfuse SDK instance.
-   * @param {LangfuseOptions} params - The configuration options for the Langfuse SDK.
-   * @returns {Langfuse} - The Langfuse SDK instance.
-   */
-  constructor(params?: { publicKey?: string; secretKey?: string } & LangfuseOptions) {
-    const langfuseConfig = utils.configLangfuseSDK(params);
+  constructor(params?: LangfuseOptions) {
+    const langfuseConfig = utils.configLangfuseSDK({ publicKey: params?.publicKey, secretKey: params?.secretKey });
     super(langfuseConfig);
 
     if (typeof window !== "undefined" && "Deno" in window === false) {

langfuse/src/types.ts

@@ -1,6 +1,25 @@
 import { type LangfuseCoreOptions } from "langfuse-core";
 
+/**
+ * LangfuseOptions
+ * @property publicKey - Public API key of Langfuse project. Can be set via LANGFUSE_PUBLIC_KEY environment variable.
+ * @property secretKey - Secret API key of Langfuse project. Can be set via LANGFUSE_SECRET_KEY environment variable.
+ * @property baseUrl - Langfuse API baseUrl (https://cloud.langfuse.com by default). Can be set via LANGFUSE_BASEURL environment variable.
+ * @property persistence - The storage method used to persist the Langfuse client state.
+ * @property persistence_name - The name of the key used to persist the Langfuse client state.
+ * @property flushAt - Max batch size that's sent to the API. Defaults to 15. Can be set via LANGFUSE_FLUSH_AT environment variable.
+ * @property flushInterval - The maximum time to wait before sending a batch. Defaults to 10000ms. Can be set via LANGFUSE_FLUSH_INTERVAL environment variable.
+ * @property fetchRetryCount - Max number of retries in case of API/network errors. Defaults to 3.
+ * @property fetchRetryDelay - The delay between HTTP request retries. Defaults to 3000ms.
+ * @property requestTimeout - Timeout of API requests in seconds. Defaults to 10000ms.
+ * @property release -  Release number/hash of the application to provide analytics grouped by release. Can be set via LANGFUSE_RELEASE environment variable.
+ * @property sdkIntegration - Used by intgerations that wrap the Langfuse SDK to add context for debugging and support. Not to be used directly.
+ * @property enabled - Enables or disables the Langfuse client. If disabled, all observability calls to the backend will be no-ops. Defaults to true.
+ * @interface
+ */
 export type LangfuseOptions = {
+  secretKey?: string;
+  publicKey?: string;
   // autocapture?: boolean
   persistence?: "localStorage" | "sessionStorage" | "cookie" | "memory";
   persistence_name?: string;