Adding JSDocs for types file

src/coinbase/types.ts

@@ -2,13 +2,28 @@ import { AxiosPromise } from "axios";
 import { User as UserModel } from "./../client/api";
 
 /**
- * UserAPI client type definition
+ * UserAPI client type definition.
  */
-export type UserAPIClient = { getCurrentUser(options?): AxiosPromise<UserModel> };
+export type UserAPIClient = {
+  /**
+   * Retrieves the current user.
+   * @param {Object} [options] - Axios request options.
+   * @returns {AxiosPromise<UserModel>} - A promise resolving to the User model.
+   * @throws {Error} If the request fails.
+   */
+  getCurrentUser(options?): AxiosPromise<UserModel>;
+};
 
 /**
- * API clients type definition for the Coinbase SDK
+ * API clients type definition for the Coinbase SDK.
+ * Represents the set of API clients available in the SDK.
+ * @typedef {Object} ApiClients
+ * @property {UserAPIClient} [user] - The User API client.
  */
 export type ApiClients = {
+  /**
+   * The User API client.
+   * @type {UserAPIClient}
+   */
   user?: UserAPIClient;
 };