chore: unify caught errors as err (#5439)

Author: wnghdcjfe

browser-entry.js

@@ -79,8 +79,8 @@ process.on = function (e, fn) {
   }
 };
 
-process.listeners = function (e) {
-  if (e === 'uncaughtException') {
+process.listeners = function (err) {
+  if (err === 'uncaughtException') {
     return uncaughtExceptionHandlers;
   }
   return [];

lib/cli/run-helpers.js

@@ -285,8 +285,8 @@ exports.validateLegacyPlugin = (opts, pluginType, map = {}) => {
       // Try to load reporters from a cwd-relative path
       try {
         map[pluginId] = require(path.resolve(pluginId));
-      } catch (e) {
-        throw createUnknownError(e);
+      } catch (err) {
+        throw createUnknownError(err);
       }
     }
   }

lib/cli/watch-run.js

@@ -314,8 +314,8 @@ const createRerunner = (mocha, watcher, {beforeRun} = {}) => {
           console.error(`${logSymbols.info} [mocha] waiting for changes...`);
         }
       });
-    } catch (e) {
-      console.error(e.stack);
+    } catch (err) {
+      console.error(err.stack);
     }
   };
 

lib/mocha.js

@@ -346,8 +346,8 @@ Mocha.prototype.reporter = function (reporterName, reporterOptions) {
         // Try to load reporters from a cwd-relative path
         try {
           reporter = require(path.resolve(reporterName));
-        } catch (e) {
-          throw createInvalidReporterError(e.message, reporterName);
+        } catch (err) {
+          throw createInvalidReporterError(err.message, reporterName);
         }
       }
     }

test/integration/helpers.js

@@ -504,7 +504,7 @@ function touchFile(filepath) {
   fs.mkdirSync(path.dirname(filepath), { recursive: true });
   try {
     fs.utimesSync(filepath, touchRef, touchRef);
-  } catch (e) {
+  } catch (err) {
     const fd = fs.openSync(filepath, 'a');
     fs.closeSync(fd);
   }