degitgitagitya · June 21, 2022 12:33 · Jul 27, 2021 · Jul 27, 2021
diff --git a/Api.ts b/Api.ts
@@ -0,0 +1,21 @@
+import Axios, { AxiosRequestConfig } from 'axios';
+import { resolveErrorBackEnd, resolvePromise } from '../ErrorHandler';
+
+const someApiCall = async () => {
+    const requestConfig: AxiosRequestConfig = {
+      headers: {
+        Authorization: ``,
+      },
+    };
+    const [data, error] = await resolvePromise<PaginatedConversation>(
+      Axios.get(``),
+        requestConfig
+      ),
+      resolveErrorBackEnd
+    );
+    if (error) {
+      // Handle Error
+    } else {
+      // Handle Data
+    }
+}
diff --git a/ErrorHandler.ts b/ErrorHandler.ts
@@ -18,4 +18,31 @@ export const resolvePromise = async <T>(
   } catch (error) {
     return [null, resolveError(error)] as const;
   }
+};
+
+/**
+ * @param  {AxiosError<ErrorResolverBackEndDataType>} error
+ * @returns ErrorResolverBackEndType
+ */
+export const resolveErrorBackEnd = (
+  error: AxiosError<ErrorResolverBackEndDataType>
+): ErrorResolverBackEndType => {
+  if (error.response) {
+    return {
+      code: error.response.status,
+      detail: error.response.data.detail
+        ? error.response.data.detail
+        : error.response.statusText,
+    };
+  } else if (error.request) {
+    return {
+      code: 500,
+      detail: 'The request was made but no response was received',
+    };
+  } else {
+    return {
+      code: 500,
+      detail: 'Something happened in setting up the request',
+    };
+  }
 };
diff --git a/ErrorHandler.ts b/ErrorHandler.ts
@@ -0,0 +1,21 @@
+import { AxiosError } from 'axios';
+
+/**
+ * @param  {Promise<{data:T;}>} promise
+ * @param  {(error:AxiosError<ErrorResolverBackEndDataType>)=>ErrorResolverBackEndType} resolveError
+ */
+export const resolvePromise = async <T>(
+  promise: Promise<{
+    data: T;
+  }>,
+  resolveError: (
+    error: AxiosError<ErrorResolverBackEndDataType>
+  ) => ErrorResolverBackEndType
+) => {
+  try {
+    const { data } = await promise;
+    return [data, null] as const;
+  } catch (error) {
+    return [null, resolveError(error)] as const;
+  }
+};