Add JSDoc for the summary table creator function

change/@itwin-eslint-plugin-79533bb2-3593-49c1-8fbe-fdbaf887e839.json

@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Don't create csv report by default and add JSDoc for the summary table creator function",
+  "packageName": "@itwin/eslint-plugin",
+  "email": "[email protected]",
+  "dependentChangeType": "patch"
+}

dist/formatters/utils/no-internal-summary-table-creator.js

@@ -7,7 +7,22 @@ const fs = require('fs');
 const process = require('process');
 const createAsciiTable = require('./create-ascii-table');
 
-module.exports = function(messages, ruleId, createCSV = true) {
+/**
+ * Generates a summary table and optionally a CSV from linting messages for a specific rule.
+ * 
+ * This function processes an array of linting messages, filters them by a specified rule ID,
+ * and then generates a summary table and optionally a CSV file based on these messages. 
+ * 
+ * The summary table is always created and returned while the CSV file is created only if the 
+ * `createCSV` flag is set to `true`.
+ * 
+ * @param {Object[]} messages - An array of linting message objects to be processed.
+ * @param {string} ruleId - The ID of the linting rule to filter messages by.
+ * @param {boolean} [createCSV=false] - A boolean flag indicating whether to create a CSV file (`true`) 
+ *                                     or not. Defaults to `false`.
+ * @returns {string} The generated summary table as a string.
+ */
+module.exports = function(messages, ruleId, createCSV = false) {
   const problemFiles = new Map();
   const errorTracker = new Map();
   const tagViolationsTracker = new Map();
@@ -41,7 +56,7 @@ module.exports = function(messages, ruleId, createCSV = true) {
   });
 
     if (problemFiles.size === 0 || errorTracker.size === 0 || tagViolationsTracker.size === 0)
-      return;
+      return '';
 
     // iterate over the problemFiles and for each value, remove the last comma from locations
     for (const [key, value] of problemFiles.entries()) {