refactor: use more clear retryer error messages (#3216)

src/common/retryer.js

@@ -1,10 +1,12 @@
 import { CustomError, logger } from "./utils.js";
 
 // Script variables.
+
+// Count the number of GitHub API tokens available.
 const PATs = Object.keys(process.env).filter((key) =>
   /PAT_\d*$/.exec(key),
 ).length;
-const RETRIES = PATs ? PATs : 7;
+const RETRIES = process.env.NODE_ENV === "test" ? 7 : PATs;
 
 /**
  * @typedef {import("axios").AxiosResponse} AxiosResponse Axios response.
@@ -20,6 +22,9 @@ const RETRIES = PATs ? PATs : 7;
  * @returns {Promise<T>} The response from the fetcher function.
  */
 const retryer = async (fetcher, variables, retries = 0) => {
+  if (!RETRIES) {
+    throw new CustomError("No GitHub API tokens found", CustomError.NO_TOKENS);
+  }
   if (retries > RETRIES) {
     throw new CustomError("Maximum retries exceeded", CustomError.MAX_RETRY);
   }

src/common/utils.js

@@ -381,8 +381,9 @@ const CONSTANTS = {
 };
 
 const SECONDARY_ERROR_MESSAGES = {
-  MAX_RETRY:
+  MAX_RETRY: "Downtime due to GitHub API rate limiting",
-    "Please add an env variable called PAT_1 with your github token in vercel",
+  NO_TOKENS:
+    "Please add an env variable called PAT_1 with your GitHub API token in vercel",
   USER_NOT_FOUND: "Make sure the provided username is not an organization",
   GRAPHQL_ERROR: "Please try again later",
   WAKATIME_USER_NOT_FOUND: "Make sure you have a public WakaTime profile",
@@ -403,6 +404,7 @@ class CustomError extends Error {
   }
 
   static MAX_RETRY = "MAX_RETRY";
+  static NO_TOKENS = "NO_TOKENS";
   static USER_NOT_FOUND = "USER_NOT_FOUND";
   static GRAPHQL_ERROR = "GRAPHQL_ERROR";
   static WAKATIME_ERROR = "WAKATIME_ERROR";