diff --git a/packages/backend/src/errors/already-processed.ts b/packages/backend/src/errors/already-processed.js
similarity index 100%
rename from packages/backend/src/errors/already-processed.ts
rename to packages/backend/src/errors/already-processed.js
diff --git a/packages/backend/src/errors/base.ts b/packages/backend/src/errors/base.js
similarity index 51%
rename from packages/backend/src/errors/base.ts
rename to packages/backend/src/errors/base.js
index 56607322..33dfb57c 100644
--- a/packages/backend/src/errors/base.ts
+++ b/packages/backend/src/errors/base.js
@@ -1,22 +1,22 @@
-import { IJSONObject } from '@automatisch/types';
-
 export default class BaseError extends Error {
   details = {};
-  statusCode?: number;
 
-  constructor(error?: string | IJSONObject) {
-    let computedError: Record<string, unknown>;
+  constructor(error) {
+    let computedError;
+
     try {
-      computedError = JSON.parse(error as string);
+      computedError = JSON.parse(error);
     } catch {
-      computedError = (typeof error === 'string' || Array.isArray(error)) ? { error } : error;
+      computedError =
+        typeof error === 'string' || Array.isArray(error) ? { error } : error;
     }
 
-    let computedMessage: string;
+    let computedMessage;
+
     try {
       // challenge to input to see if it is stringified JSON
-      JSON.parse(error as string);
-      computedMessage = error as string;
+      JSON.parse(error);
+      computedMessage = error;
     } catch {
       if (typeof error === 'string') {
         computedMessage = error;
diff --git a/packages/backend/src/errors/early-exit.ts b/packages/backend/src/errors/early-exit.js
similarity index 100%
rename from packages/backend/src/errors/early-exit.ts
rename to packages/backend/src/errors/early-exit.js
diff --git a/packages/backend/src/errors/generate-auth-url.js b/packages/backend/src/errors/generate-auth-url.js
new file mode 100644
index 00000000..734a3001
--- /dev/null
+++ b/packages/backend/src/errors/generate-auth-url.js
@@ -0,0 +1,10 @@
+import BaseError from './base';
+
+export default class GenerateAuthUrlError extends BaseError {
+  constructor(error) {
+    const computedError = error.response?.data || error.message;
+    super(computedError);
+
+    this.message = `Error occured while creating authorization URL!`;
+  }
+}
diff --git a/packages/backend/src/errors/generate-auth-url.ts b/packages/backend/src/errors/generate-auth-url.ts
deleted file mode 100644
index 630f2bcf..00000000
--- a/packages/backend/src/errors/generate-auth-url.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-import { IJSONObject } from '@automatisch/types';
-import BaseError from './base';
-
-export default class GenerateAuthUrlError extends BaseError {
-  constructor(error: IJSONObject) {
-    const computedError =
-      ((error.response as IJSONObject)?.data as IJSONObject) ||
-      (error.message as string);
-
-    super(computedError);
-
-    this.message = `Error occured while creating authorization URL!`;
-  }
-}
diff --git a/packages/backend/src/errors/http.js b/packages/backend/src/errors/http.js
new file mode 100644
index 00000000..0a3ac8f1
--- /dev/null
+++ b/packages/backend/src/errors/http.js
@@ -0,0 +1,10 @@
+import BaseError from './base';
+
+export default class HttpError extends BaseError {
+  constructor(error) {
+    const computedError = error.response?.data || error.message;
+    super(computedError);
+
+    this.response = error.response;
+  }
+}
diff --git a/packages/backend/src/errors/http.ts b/packages/backend/src/errors/http.ts
deleted file mode 100644
index d7a38e13..00000000
--- a/packages/backend/src/errors/http.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import type { AxiosResponse, AxiosError } from 'axios';
-import { IJSONObject } from '@automatisch/types';
-import BaseError from './base';
-
-export default class HttpError extends BaseError {
-  response: AxiosResponse;
-
-  constructor(error: AxiosError) {
-    const computedError =
-      error.response?.data as IJSONObject ||
-      error.message as string;
-
-    super(computedError);
-
-    this.response = error.response;
-  }
-}
diff --git a/packages/backend/src/errors/quote-exceeded.ts b/packages/backend/src/errors/quote-exceeded.js
similarity index 100%
rename from packages/backend/src/errors/quote-exceeded.ts
rename to packages/backend/src/errors/quote-exceeded.js