fix: resolve vscode type errors in API endpoints files

api/gist.js

@@ -11,7 +11,9 @@
   setErrorCacheHeaders,
 } from "../src/common/cache.js";
 import { guardAccess } from "../src/common/access.js";
+import { retrieveSecondaryMessage } from "../src/common/error.js";
 
+// @ts-ignore
 export default async (req, res) => {
   const {
     id,
@@ -89,10 +91,24 @@
     );
   } catch (err) {
     setErrorCacheHeaders(res);
+    if (err instanceof Error) {
+      return res.send(
+        renderError({
+          message: err.message,
+          secondaryMessage: retrieveSecondaryMessage(err),
+          renderOptions: {
+            title_color,
+            text_color,
+            bg_color,
+            border_color,
+            theme,
+          },
+        }),
+      );
+    }
     return res.send(
       renderError({
-        message: err.message,
-        secondaryMessage: err.secondaryMessage,
+        message: "An unknown error occurred",
         renderOptions: {
           title_color,
           text_color,

api/index.js

@@ -8,10 +8,12 @@
   setCacheHeaders,
   setErrorCacheHeaders,
 } from "../src/common/cache.js";
+import { retrieveSecondaryMessage } from "../src/common/error.js";
 import { parseArray, parseBoolean, renderError } from "../src/common/utils.js";
 import { fetchStats } from "../src/fetchers/stats.js";
 import { isLocaleAvailable } from "../src/translations.js";
 
+// @ts-ignore
 export default async (req, res) => {
   const {
     username,
@@ -127,10 +129,24 @@
     );
   } catch (err) {
     setErrorCacheHeaders(res);
+    if (err instanceof Error) {
+      return res.send(
+        renderError({
+          message: err.message,
+          secondaryMessage: retrieveSecondaryMessage(err),
+          renderOptions: {
+            title_color,
+            text_color,
+            bg_color,
+            border_color,
+            theme,
+          },
+        }),
+      );
+    }
     return res.send(
       renderError({
-        message: err.message,
-        secondaryMessage: err.secondaryMessage,
+        message: "An unknown error occurred",
         renderOptions: {
           title_color,
           text_color,

api/pin.js

@@ -8,10 +8,12 @@
   setCacheHeaders,
   setErrorCacheHeaders,
 } from "../src/common/cache.js";
+import { retrieveSecondaryMessage } from "../src/common/error.js";
 import { parseBoolean, renderError } from "../src/common/utils.js";
 import { fetchRepo } from "../src/fetchers/repo.js";
 import { isLocaleAvailable } from "../src/translations.js";
 
+// @ts-ignore
 export default async (req, res) => {
   const {
     username,
@@ -92,10 +94,24 @@
     );
   } catch (err) {
     setErrorCacheHeaders(res);
+    if (err instanceof Error) {
+      return res.send(
+        renderError({
+          message: err.message,
+          secondaryMessage: retrieveSecondaryMessage(err),
+          renderOptions: {
+            title_color,
+            text_color,
+            bg_color,
+            border_color,
+            theme,
+          },
+        }),
+      );
+    }
     return res.send(
       renderError({
-        message: err.message,
-        secondaryMessage: err.secondaryMessage,
+        message: "An unknown error occurred",
         renderOptions: {
           title_color,
           text_color,

api/top-langs.js

@@ -8,10 +8,12 @@
   setCacheHeaders,
   setErrorCacheHeaders,
 } from "../src/common/cache.js";
+import { retrieveSecondaryMessage } from "../src/common/error.js";
 import { parseArray, parseBoolean, renderError } from "../src/common/utils.js";
 import { fetchTopLanguages } from "../src/fetchers/top-languages.js";
 import { isLocaleAvailable } from "../src/translations.js";
 
+// @ts-ignore
 export default async (req, res) => {
   const {
     username,
@@ -150,10 +152,24 @@
     );
   } catch (err) {
     setErrorCacheHeaders(res);
+    if (err instanceof Error) {
+      return res.send(
+        renderError({
+          message: err.message,
+          secondaryMessage: retrieveSecondaryMessage(err),
+          renderOptions: {
+            title_color,
+            text_color,
+            bg_color,
+            border_color,
+            theme,
+          },
+        }),
+      );
+    }
     return res.send(
       renderError({
-        message: err.message,
-        secondaryMessage: err.secondaryMessage,
+        message: "An unknown error occurred",
         renderOptions: {
           title_color,
           text_color,

api/wakatime.js

@@ -11,7 +11,9 @@
   setErrorCacheHeaders,
 } from "../src/common/cache.js";
 import { guardAccess } from "../src/common/access.js";
+import { retrieveSecondaryMessage } from "../src/common/error.js";
 
+// @ts-ignore
 export default async (req, res) => {
   const {
     username,
@@ -108,10 +110,24 @@
     );
   } catch (err) {
     setErrorCacheHeaders(res);
+    if (err instanceof Error) {
+      return res.send(
+        renderError({
+          message: err.message,
+          secondaryMessage: retrieveSecondaryMessage(err),
+          renderOptions: {
+            title_color,
+            text_color,
+            bg_color,
+            border_color,
+            theme,
+          },
+        }),
+      );
+    }
     return res.send(
       renderError({
-        message: err.message,
-        secondaryMessage: err.secondaryMessage,
+        message: "An unknown error occurred",
         renderOptions: {
           title_color,
           text_color,

src/common/error.js

@@ -1,3 +1,5 @@
+// @ts-check
+
 /**
  * @type {string} A general message to ask user to try again later.
  */
@@ -61,9 +63,22 @@ class MissingParamError extends Error {
   }
 }
 
+/**
+ * Retrieve secondary message from an error object.
+ *
+ * @param {Error} err The error object.
+ * @returns {string|undefined} The secondary message if available, otherwise undefined.
+ */
+const retrieveSecondaryMessage = (err) => {
+  return "secondaryMessage" in err && typeof err.secondaryMessage === "string"
+    ? err.secondaryMessage
+    : undefined;
+};
+
 export {
   CustomError,
   MissingParamError,
   SECONDARY_ERROR_MESSAGES,
   TRY_AGAIN_LATER,
+  retrieveSecondaryMessage,
 };