diff --git a/.eslintrc.js b/.eslintrc.js
index cc54a78..f8e2339 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -69,7 +69,8 @@ module.exports = {
     "no-return-assign": "error",
     "no-script-url": "error",
     "no-sequences": "error",
-    "no-shadow": "error",
+    "no-shadow": "off",
+    "@typescript-eslint/no-shadow": ["error"],
     "no-throw-literal": "error",
     "no-undef-init": "error",
     "no-undefined": "error",
diff --git a/src/alpaca/exchange.ts b/src/alpaca/exchange.ts
index 2d701d0..eceadd4 100644
--- a/src/alpaca/exchange.ts
+++ b/src/alpaca/exchange.ts
@@ -51,7 +51,7 @@ export class AlpacaExchange implements Exchange {
 
         this.portfolioProvider = new AlpacaPortfolioProvider(this.alpaca);
         this.quoteProvider = new AlpacaQuoteProvider(this.alpaca);
-        this.actionProvider = undefined!;
+        this.actionProvider = null!;
 
         this.name = 'Alpaca';
     }
diff --git a/src/interface/actions.ts b/src/interface/actions.ts
index f42530a..2fdad9c 100644
--- a/src/interface/actions.ts
+++ b/src/interface/actions.ts
@@ -1,7 +1,7 @@
 /**
  * Enum representing the possible sides of an action.
  */
-export enum ActionSide {
+export const enum ActionSide {
     Buy,
     Sell,
 }
@@ -19,7 +19,7 @@ export class Action {
      * The quantity of the asset being traded.
      */
     readonly quantity: number;
-    
+
     /**
      * The side of the action, either "buy" or "sell".
      */
@@ -50,7 +50,7 @@ export class Action {
  * Enum representing the type of date filter used in an action fetch.
  * @enum {number}
  */
-export enum ActionDateType {
+export const enum ActionDateType {
     On,
     After,
     Before,
@@ -89,7 +89,7 @@ export class ActionFetchOptions {
      * The number of items to fetch per page.
      */
     readonly pageSize?: number;
-    
+
     /**
      * The date options for filtering actions.
      */
@@ -100,6 +100,7 @@ export class ActionFetchOptions {
  * Represents the response of a fetch action request.
  */
 export interface ActionFetchResponse {
+
     /**
      * An array of `Action` objects.
      */
@@ -116,10 +117,11 @@ export interface ActionFetchResponse {
  * An interface representing an object that provides actions.
  */
 export interface ActionProvider {
+
     /**
      * Fetches actions based on the provided options.
      * @param options - The options to use when fetching actions.
      * @returns A promise that resolves to an object containing the fetched actions.
      */
     readonly fetchActions: (options: ActionFetchOptions) => Promise<ActionFetchResponse>;
-}
\ No newline at end of file
+}