diff --git a/src/index.ts b/src/index.ts
index 195fd0e..aad8dbd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,24 +1,9 @@
-import { createLogger, transports, format } from "winston";
-import { Account } from "./interface/account";
-import { Quote } from "./interface/quote"
+import { PortfolioProvider } from "./interface/portfolio";
+import { QuoteProvider } from "./interface/quote";
 
 export interface Exchange {
-    name: string;
+    readonly portfolioProvider: PortfolioProvider;
+    readonly quoteProvider: QuoteProvider;
 
-    fetchAccounts: () => Account[];
-    fetchQuote: (symbol: string) => Quote;
-}
-
-
-const logger = createLogger({
-    transports: [new transports.Console()],
-    format: format.combine(
-      format.colorize(),
-      format.timestamp(),
-      format.printf(({ timestamp, level, message }) => {
-        return `[${timestamp}] ${level}: ${message}`;
-      })
-    ),
-  });
-
-logger.info("Hello world!");
+    readonly name: string;
+}
\ No newline at end of file
diff --git a/src/interface/exchange.ts b/src/interface/exchange.ts
deleted file mode 100644
index 18f2a40..0000000
--- a/src/interface/exchange.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { PortfolioProvider } from "./portfolio";
-import { QuoteProvider } from "./quote";
-
-export interface Exchange {
-    readonly portfolioProvider: PortfolioProvider;
-    readonly quoteProvider: QuoteProvider;
-
-    readonly name: string;
-}
\ No newline at end of file